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Invalid date format specification in gemspec

I am getting the following error when I try to use gems in windows, and I also referred to this stackoverflow post and updated rubygems and rails. But nothing could solve the problem. ...
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In Python, how do I determine if an object is iterable?

... edited Apr 16 at 4:09 Edwin van der Helm 3333 bronze badges answered Apr 10 at 11:24 Pekka KlärckPekk...
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Suppress command line output

... reserved names, but the basic convention was very well established. When Windows was created, it started life as a fairly thin application switching layer on top of the MSDOS kernel, and thus had the same file name restrictions. When Windows NT was created as a true operating system in its own rig...
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Hash collision in git

... but probability means absolutely nothing here. You can say the same about winning the lotto, but people win lotto here and there on a daily basis. So the lotto company can't really just say: the chance is small so we shouldn't have to worry about actually paying out the jackpot. The OP's question h...
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Unable to install gem - Failed to build gem native extension - cannot load such file — mkmf (LoadErr

... For WSL (Windows Subsystem for Linux) you need install build-essential package: sudo apt install build-essential share | improve t...
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How do I check if a file exists in Java?

...a.io.File.exists() (from my small benchmark on the only computer I tested: Windows Server 2012 running Java 1.7.0_45 x64). – Matthieu May 16 '17 at 16:53 1 ...
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How to detect when cancel is clicked on file input?

...dy.addEventListener.. I don't know why. Instead I got the same result with window.addEventListener. – WoodenKitty Aug 13 '16 at 2:21 3 ...
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How do I put a clear button inside my HTML text input box like the iPhone does?

... This is awesome, but I would advice adding in "$(window).resize(function() {triggerBtn()});" in jquery.clearsearch.js, just after $this.on('keyup keydown change focus', triggerBtn); | So that resize windows will not messed up the cross position – Ng Se...
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Node.js or Erlang

...eaker. Specifically, it looks like you would need to run under Cygwin for Windows support. Looks good though. Edit Node.js now has native support for Windows. share | improve this answer ...
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Access Denied for User 'root'@'localhost' (using password: YES) - No Privileges?

...'ll going to forcefully INSERT a record into the mysql.user table In the init file, use this instead INSERT INTO mysql.user (Host, User, Password) VALUES ('%', 'root', password('YOURPASSWORD')); GRANT ALL ON *.* TO 'root'@'%' WITH GRANT OPTION; ...