Metadata Consulting [dot] ca: March 2019

Friday, March 29, 2019

TypeScript 3.4 released March 29, 2019

Here's what’s new in TypeScript 3.4!

Wednesday, March 27, 2019

SPAM Email - PAYMENT OF ONE MILLION British Pounds £1,000, 000.00

For the record, here a recently circulating SPAM email caught by SPAM filters.

From The Coca-Cola National Lottery
Office Address: 30 Leicester Square London
Leicester Square London, United Kingdom WC2H 7LA
Tel: +447430573081
Fax: +448447742671
Contact Agent: MRS.ELIZABETH OWEN ON THIS E-MAIL : elizabethowen1@yandex.com
REFERENCE NO: MSW-L/200-26937
BATCH NO: 2009MARL#L03
WINNER NO: 5

Dear Winner,
We are pleased to inform you that your emails/company address has been selected for a cash prize offer as registered member of Internet E-mail user. You have subsequently won the sum of One Million British Pounds £1,000,000.00 from the Coca-Cola National Lottery international email promotion.

All participants were selected from worldwide websites through our Microsoft computer ballot system drawn from 21,000 names, 3,000 names from each continent (Canada, Asia, Australia, United State, Europe, Middle East, Africa and Oceania, as part of international "e-mail" promotions program, which is conducted annually for prominent ms -word users all over the world, and to encourage the use of internet and alleviate poverty worldwide

As part of our security protocol you are to quote this security code MSW/MAR/XX09,
REFERENCE NO: MSW-L/200-26937, BATCH NO: 2009MARL#L03 to your claiming agent.
(Regarding the process to transfer your prize, kindly contact your claim agent immediately with below information:
Contact Claim Agent: MRS.ELIZABETH OWEN ON THIS E-MAIL : elizabethowen1@yandex.com
Provide us with your full details for your payment

Full Name Surname/First: .......

Cell phone number: .......

Address: ..........

City: ..........

Country Origin: .........

Occupation: .........

Date of Birth: ........

Gender: ..........

Email: .........

Endeavor to call or email the agency your full details such as your winning information.
If you do not contact your claims (AGENT) within 72 hours of this notification, your winning could be revoked. Winners are advised to keep their winning information secret to avoid fraudulent claim (IMPORTANT) pending the transfer/claim by Winner.
Congratulations once again!!!
Regards,
Mrs. Patricia Barry (Announcement)
---------------------------------------------------------
Mrs. theresa may (PM)
Mr. Evans Cooper [Director].
MRS.MICHAEL BLESSING ADAMA COCA-COLA REPRESENTATIVE IN GERMANY

Thursday, March 21, 2019

Microsoft Clippy for teams removed here's an alternate

A full list with all Clippy animations available in the new Microsoft Teams app can be found in the ClippySetRepository.cs file, within the microsoft-teams-clippy-app GitHub repository but has vanished?

With a bit of effort, Javascript lovers, you can embed Clippy, Merlin, Rover and Links on any website
https://www.smore.com/clippy-js

Tuesday, March 19, 2019

A Unicode "ReplaceAt" string extension method handles Unicode string properly

Most "ReplaceAt" commonly methods seen online fail when replace a character at a specific position in a Unicode string.

Unicode String Replace At Issue

Lets examine Unicode string "🎶🔥é-"

🎶 Unicode Character 'MULTIPLE MUSICAL NOTES' (U+1F3B6) - 4-byte Unicode character
🔥 Fire Emoji U+1F525 - 4-byte Unicode character
é Latin Small Letter e with Acute U+00E9 - 2-byte Unicode character
- Unicode Character 'HYPHEN-MINUS' (U+002D) - 2-byte Unicode character

😊 Smiling Face with Smiling Eyes Emoji U+1F60A - 4-byte Unicode character (replacement)

🎶🔥é- is length of 6, but there are ONLY 4 characters! Why not len=4?
🎶🔥 are double byte UNICODE characters (> \u10000) of width or len 2 each
🎶🔥é- below will replace space after lasting character '-' (position 4) with a sub using most common techniques seen online

This is due to the fact that Unicode code points outside of the Basic Multilingual Plane (BMP) > U+FFFF, are are represented in UTF-16 using 4 byte surrogate pairs, rather than using 2 bytes.

Specifically, the High Surrogate (U+D800–U+DBFF) and Low Surrogate (U+DC00–U+DFFF) codes are reserved for encoding non-BMP characters in UTF-16 by using a pair of 16-bit codes: one High Surrogate and one Low Surrogate. A single surrogate code point will never be assigned a character.

To correctly count the number of characters in a string that may contain code points higher than U+FFFF, you can use the StringInfo class (from System.Globalization).

Below is an large enumeration of common ReplaceAt implementations available on internet. They all fail, except for one that using StringInfo. .

UnicocodeReplaceAt method replaces a character in a string at specific zero-based index and handles null char '\0' properly, by removing if from resultant string.

using System.Linq;
using System.Diagnostics;
using System;
using System.Text;
using System.Globalization;

//Created for 
//http://metadataconsulting.blogspot.com/2019/03/A-Unicode-ReplaceAt-string-extension-method-handles-Unicode-string-properly.html

public static class Program
{

 
 const char cEMPTY = '\0'; 
    static readonly string EMPTY = cEMPTY.ToString(); 
 
 public static string UnicodeReplaceAtFastest(this string s, int idx, string replace)
    {
        // This StringBuilder holds the output results.
        StringBuilder sb = new StringBuilder();

      // Use the ParseCombiningCharacters method to 
      // get the index of each real character in the string.
      Int32[] textElemIndex = StringInfo.ParseCombiningCharacters(s);
    
      if (string.IsNullOrEmpty(s)) return s;
      if (idx < 1) 
          return s; 

      string newstring = string.Empty;
      if (textElemIndex.Length == 1) {
          return replace; 
      }
      else if (idx < textElemIndex.Length)
      {
          idx = idx - 1; 
       return s.Remove(textElemIndex[idx], textElemIndex[idx + 1] - textElemIndex[idx]).Insert(textElemIndex[idx], replace.ToString()); 

      }
   else if (idx == textElemIndex.Length)
   {
    idx = idx - 1;
    return s.Remove(textElemIndex[idx], s.Length - textElemIndex[idx]).Insert(textElemIndex[idx], replace.ToString());

   }
      else
          return s; 
        
    }

 
 public static string UnicodeReplaceAtFast(this string s, int idx, string replace)
    {
        // This StringBuilder holds the output results.
        StringBuilder sb = new StringBuilder();

        // Use the enumerator returned from GetTextElementEnumerator 
        // method to examine each real character.
        TextElementEnumerator charEnum = StringInfo.GetTextElementEnumerator(s);

        if (string.IsNullOrEmpty(s)) return s;
        if (idx < 1)
            return s;

        //string newstring = string.Empty;
        //if (textElemIndex.Length == 1)
        //{
        //    return replace;
        //}
        //else if (idx <= textElemIndex.Length)
        //{
            idx = idx - 1;

            while (charEnum.MoveNext())
            {
                if (charEnum.ElementIndex != idx)
                    sb.Append(charEnum.GetTextElement()); 
                else
     sb.Append(replace);
                    
                // i++;   
            }

            return sb.ToString();

        //}
        //else
        //    return s;

    }
 
    public static string UnicodeReplaceAt(this string str, int offset, char replaceChar)
    {
        int count = 1; //number of characters to remove at location offset
        string replaceBy = replaceChar.ToString();
        return new StringInfo(str).ReplaceByPosition(replaceBy, offset, count).String;
    }

    public static StringInfo ReplaceByPosition(this StringInfo str, string replaceBy, int offset, int count)
    {
        if (replaceBy != EMPTY)
            return str.RemoveByTextElements(offset, count).InsertByTextElements(offset, replaceBy);
  else if (!string.IsNullOrEmpty(replaceBy))
   return str.RemoveByTextElements(offset, count).InsertByTextElements(offset, replaceBy);
        else
            return str.RemoveByTextElements(offset, count);
    }

    public static StringInfo RemoveByTextElements(this StringInfo str, int offset, int count)
    { 
  //Tue 20-Aug-19 11:32am metadataconsulting.ca - replaceat index > string.len return orginal string
  if (offset > str.LengthInTextElements)
   return str;
  
        return new StringInfo(string.Concat(
            str.SubstringByTextElements(0, offset),
            offset + count < str.LengthInTextElements
                ? str.SubstringByTextElements(offset + count, str.LengthInTextElements - count - offset)
                : string.Empty
            ));
    }
    public static StringInfo InsertByTextElements(this StringInfo str, int offset, string insertStr)
    {
        //Tue 20-Aug-19 11:32am metadataconsulting.ca - replaceat index > string.len return orginal string
  if (offset > str.LengthInTextElements)
   return str;
  
  if (string.IsNullOrEmpty(str.String))
            return new StringInfo(insertStr);

        return new StringInfo(string.Concat(
            str.SubstringByTextElements(0, offset),
            insertStr,
            str.LengthInTextElements - offset > 0 ? str.SubstringByTextElements(offset, str.LengthInTextElements - offset) : ""
        ));
    }

    public static string SubsituteStringStringBuilder(this string s, int idx, char replaceChar)
    {
        if (string.IsNullOrEmpty(s) || idx >= s.Length || idx < 0)
            return s;

        return new StringBuilder(s).Remove(idx, 1).Insert(idx, replaceChar.ToString()).ToString();
    }

    public static string ReplaceAtSubstring(this string s, int idx, char replaceChar)
    {
        if (string.IsNullOrEmpty(s) || idx >= s.Length || idx < 0)
            return s;

        return s.Substring(0, idx) + replaceChar.ToString() + s.Substring(idx + replaceChar.ToString().Length, s.Length - (idx + replaceChar.ToString().Length));

    }

    public static string ReplaceAtStringManipulation(this string s, int idx, char replaceChar)
    {
        if (string.IsNullOrEmpty(s) || idx >= s.Length || idx < 0)
            return s;

        return s.Remove(idx, 1).Insert(idx, replaceChar.ToString());
    }

    public static string ReplaceAtLinq(this string value, int index, char newchar)
    {
        if (value.Length <= index)
            return value;
        else
            return string.Concat(value.Select((c, i) => i == index ? newchar : c));
    }

    public static string ReplaceAtCharArray(this string input, uint index, char newChar)
    {
        if (string.IsNullOrEmpty(input) || index >= input.Length)
            return input;

        char[] chars = input.ToCharArray();
        chars[index] = newChar;
        return new string(chars);
    }

    public static void Main()
    {
        //In .NET 4.5 and later also UTF-16 is supported
        //Console.OutputEncoding = System.Text.Encoding.Unicode;  
        
  //é  Latin Small Letter e with Acute U+00E9 - single byte Unicode character
  //😊 Smiling Face with Smiling Eyes Emoji U+1F60A - double byte Unicode character
  //🎶 Multiple Musical Notes Emoji U+1F3B6 - - double byte Unicode character
  //🔥 Fire Emoji U+1F525 -- double byte Unicode character
  
  Console.WriteLine("Unicode String Replace At Issue");
  Console.WriteLine("Lets examine string \"🎶🔥é-\"");  
        Console.WriteLine("🎶🔥é- is length of " + "🎶🔥é-".Length + ", but there are ONLY 4 characters! Why not len=4?"); 
  Console.WriteLine("🎶🔥 are double byte UNICODE characters (> \\u10000) of width or len 2 each ");
  Console.WriteLine("🎶🔥é- below will replace space after lasting character '-' (position 4) with a sub using most common techniques seen online"); 
  
  Console.WriteLine(); 
  
  Stopwatch sw = new Stopwatch();
        sw.Start();
        Console.WriteLine("🎶🔥é- using ReplaceAtCharArray".ReplaceAtCharArray(4, 'X'));
        sw.Stop();
        Console.WriteLine("in {0} ticks.", sw.ElapsedTicks.ToString("N0"));

        sw.Restart();
        Console.WriteLine("🎶🔥é- using ReplaceAtLinq".ReplaceAtLinq(4, 'Y'));
        sw.Stop();
        Console.WriteLine("in {0} ticks.", sw.ElapsedTicks.ToString("N0"));

        sw.Restart();
        Console.WriteLine("🎶🔥é- using ReplaceAtStringManipulation".ReplaceAtStringManipulation(4, 'Z'));
        sw.Stop();
        Console.WriteLine("in {0} ticks.", sw.ElapsedTicks.ToString("N0"));

        sw.Restart();
        Console.WriteLine("🎶🔥é- using ReplaceAtSubstring".ReplaceAtSubstring(4, 'A'));
        sw.Stop();
        Console.WriteLine("in {0} ticks.", sw.ElapsedTicks.ToString("N0"));

        sw.Restart();
        Console.WriteLine("🎶🔥é- using SubsituteStringStringBuilder".SubsituteStringStringBuilder(4, 'W'));
        sw.Stop();
        Console.WriteLine("in {0} ticks.", sw.ElapsedTicks.ToString("N0"));

  sw.Restart();
        Console.WriteLine("🎶🔥é- using UnicodeReplaceAt".UnicodeReplaceAt(4, '4'));
        sw.Stop();
        Console.WriteLine("in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
  
  Console.WriteLine(); 
  Console.WriteLine("UnicodeReplaceAt replaces properly at position 4 in zero based index string");
        Console.WriteLine(); 
  sw.Restart();
        Console.Write("🎶🔥é- using UnicodeReplaceAt(0, '0')".UnicodeReplaceAt(0, '0'));
        sw.Stop();
  Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
  sw.Restart();
        Console.Write("🎶🔥é- using UnicodeReplaceAt(1, '1')".UnicodeReplaceAt(1, '1'));
        sw.Stop();
  Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
  sw.Restart();
        Console.Write("🎶🔥é- using UnicodeReplaceAt(2, '2')".UnicodeReplaceAt(2, '2'));
        sw.Stop();
  Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
  sw.Restart();
        Console.Write("🎶🔥é- using UnicodeReplaceAt(3, '3')".UnicodeReplaceAt(3, '3'));
        sw.Stop();
  Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
  sw.Restart();
        Console.Write("🎶🔥é- using UnicodeReplaceAt(4, '4')".UnicodeReplaceAt(4, '4'));
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
     Console.Write("🎶🔥é-".UnicodeReplaceAt(5, '5')+" using UnicodeReplaceAt(5, '5') - this is beyond end of string, so return orginal string");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        
  Console.WriteLine(); 
  Console.WriteLine(); 
  Console.WriteLine(" FAST testing.");
  Console.WriteLine(); 
  Console.WriteLine(); 
  
  sw.Reset();
        sw.Start();
        Console.Write("🎶🔥é-a\u0304\u0308bc\u0327".UnicodeReplaceAtFast(5, "😊") + " using UnicodeReplaceAtFast(5, '😊') - cool but still O(100) more :(");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));


        sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("a\u0304".UnicodeReplaceAtFast(1, "😊") + " using UnicodeReplaceAtFast(1, '😊') - bounds check - 1 char");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));

        sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("a\u0304".UnicodeReplaceAtFast(0, "😊") + " using UnicodeReplaceAtFast(0, '😊') - bounds check - wrong index");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
    
  Console.WriteLine(); 
  Console.WriteLine(); 
  Console.WriteLine(" FASTEST testing.");
  Console.WriteLine(); 
  Console.WriteLine(); 
  
  sw.Reset();
        sw.Start();
        Console.Write("🎶🔥é-a\u0304\u0308bc\u0327".UnicodeReplaceAtFastest(5, "😊") + " using UnicodeReplaceAtFastest(5, '😊') - cool but still O(100) more than string.Replace :(");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));


        sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("a\u0304".UnicodeReplaceAtFastest(1, "😊") + " using UnicodeReplaceAtFastest(1, '😊') - bounds check - 1 char");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));

        sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("a\u0304".UnicodeReplaceAtFastest(0, "😊") + " using UnicodeReplaceAtFastest(0, '😊') - bounds check - 0 index");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
    
  sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("a\u0304".UnicodeReplaceAtFastest(5, "😊") + " using UnicodeReplaceAtFastest(5, '😊') - bounds check - after end index");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
    
  sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("🎶🔥é-a\u0304\u0308bc\u0327".UnicodeReplaceAtFastest(6, "😊") + " using UnicodeReplaceAtFastest(6, '😊') - bounds check - after end index");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
    
  sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("🎶🔥é-a\u0304\u0308bc\u0327".UnicodeReplaceAtFastest(7, "😊") + " using UnicodeReplaceAtFastest(7, '😊') - bounds check - after end index");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
    
  sw.Reset();
        sw.Start();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
        Console.Write("🎶🔥é-a\u0304\u0308bc\u0327".UnicodeReplaceAtFastest(8, "😊") + " using UnicodeReplaceAtFastest(8, '😊') - bounds check - after end index");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
    

  Console.WriteLine(); 
  Console.WriteLine("String.Replace works, but replaces all characters, not at specific location as above functions");
        Console.WriteLine(); 
  sw.Reset();
        sw.Start();
  Console.Write("🎶🔥é- using String.Replace".Replace("🔥", "+") + "('🔥', '+')");
        sw.Stop();
        Console.WriteLine(" in {0} ticks.", sw.ElapsedTicks.ToString("N0"));
  
    }
}

Output

Unicode String Replace At Issue
Lets examine string "🎶🔥é-"
🎶🔥é- is length of 6, but there are ONLY 4 characters! Why not len=4?
🎶🔥 are double byte UNICODE characters (> \u10000) of width or len 2 each 
🎶🔥é- below will replace space after lasting character '-' (position 4) with a sub using most common techniques seen online

🎶🔥X- using ReplaceAtCharArray
in 2,089 ticks.
🎶🔥Y- using ReplaceAtLinq
in 3,724 ticks.
🎶🔥Z- using ReplaceAtStringManipulation
in 1,411 ticks.
🎶🔥A- using ReplaceAtSubstring
in 1,768 ticks.
🎶🔥W- using SubsituteStringStringBuilder
in 1,701 ticks.
🎶🔥é-4using UnicodeReplaceAt
in 5,811 ticks.

UnicodeReplaceAt replaces properly at position 4 in zero based index string

0🔥é- using UnicodeReplaceAt(0, '0') in 31 ticks.
🎶1é- using UnicodeReplaceAt(1, '1') in 24 ticks.
🎶🔥2- using UnicodeReplaceAt(2, '2') in 23 ticks.
🎶🔥é3 using UnicodeReplaceAt(3, '3') in 76 ticks.
🎶🔥é-4using UnicodeReplaceAt(4, '4') in 22 ticks.
🎶🔥é- using UnicodeReplaceAt(5, '5') - this is beyond end of string, so return orginal string in 22 ticks.


 FAST testing.


🎶🔥😊-ā̈bç using UnicodeReplaceAtFast(5, '😊') - cool but still O(100) more :( in 2,014 ticks.
 in 3 ticks.
😊 using UnicodeReplaceAtFast(1, '😊') - bounds check - 1 char in 23 ticks.
 in 3 ticks.
ā using UnicodeReplaceAtFast(0, '😊') - bounds check - wrong index in 19 ticks.


 FASTEST testing.


🎶🔥é-😊bç using UnicodeReplaceAtFastest(5, '😊') - cool but still O(100) more than string.Replace :( in 2,155 ticks.
 in 2 ticks.
😊 using UnicodeReplaceAtFastest(1, '😊') - bounds check - 1 char in 23 ticks.
 in 3 ticks.
ā using UnicodeReplaceAtFastest(0, '😊') - bounds check - 0 index in 21 ticks.
 in 3 ticks.
😊 using UnicodeReplaceAtFastest(5, '😊') - bounds check - after end index in 63 ticks.

String.Replace works, but replaces all characters, not at specific location as above functions

🎶+é- using String.Replace('🔥', '+') in 15 ticks.

Friday, March 15, 2019

New Chrome builds reset Google Chrome sign-in setting, another battle

From now on, every time you log into a Google property (for example, Gmail), Chrome will automatically sign the browser into your Google account for you. Old news, but....because you could turn it off in the settings.

What's new, is since Chrome Version 72+ this is being reset every-time your browser updates. Beware.

Type the following in Google Address bar

chrome://settings/?search=allow+chrome

By turning this off, you can sign in to Google sites like Gmail without signing in to Chrome

Wednesday, March 13, 2019

"ReplaceAt" string extension method that handle null char '\0' properly

A better "ReplaceAt" string extension method that handle null char '\0' properly, by removing if from resultant string. Note : This does not fully support Unicode strings. It does partially, if the replacement index is before any Unicode string, otherwise not.

Update Thu 05-Sep-19 - See UNICODE implementation - https://metadataconsulting.blogspot.com/2019/08/C-Sharp-A-Faster-Unicode-ReplaceAt-method-that-works-with-surrogate-pairs-and-4-byte-Unicode-characters.html

        /// <summary>
        /// Change a character in string, using zero-based char[] which is faster than string builder. '\0' will result in string.empty removal.
        /// </summary>
        /// <param name="s">input string</param>
        /// <param name="idx">index</param>
        /// <param name="replaceChar">replacement character</param>
        /// <returns>string with replaced character or null removed</returns>
        public static string ReplaceAt(this string s, int idx, char replaceChar)
        {
            if (string.IsNullOrEmpty(s) || idx >= s.Length || idx < 0) //not ideal want unint but takes too long
                return s;

            if (replaceChar == '\0')
                return s.Remove(idx, 1); 
            else
                return s.Remove(idx, 1).Insert(idx, replaceChar.ToString()); //in 1,483 ticks small string, 1,592 ticks for 50 char length

       }

Tuesday, March 12, 2019

Review of FireFox Send, share large files up-to 2.5G securely and privately

Hot of the press, Firefox Send lets you share files with end-to-end encryption and a link that automatically expires up-to 7 days later.

Once upload is complete, you get a copy the link to click and download the file. So you can keep what you share private and make sure your stuff doesn’t stay online forever.

Features:

Send up-to 1G file without sign up and link expires after 1 day.
Send up-to 2.5G file if you sign-up (https://send.firefox.com/) and choose expiry up to 7 days.
Users of the link don’t need to have a Firefox account to access your file.

Wins:

Free file sharing with end-to-end encryption rocks. We'll see how long before this gets hacked for privacy.

Frustrations:

Well, file uploading gets stuck occasionally, but for a free service what do you expect. You have to cancel and retry until it works.

Tips:

As soon as progress meter freezes, you might as well cancel the upload.

I have waited for 5 minutes for the file to resume, but it never did in test below.

Speed Testing:

1st attempt - File failed to upload

2nd attempt - Uploading chrome-win32.zip (101Mb) file took about 2 minutes to upload.

3rd attempt - Uploading thejapaneseswordasthesoulofthesamurai.mp4 (143Mb) took about 3 minutes.

4th attempt - Uploading krd.iso (563.6 Mb) file failed