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What's this =! operator? [duplicate]

...ls' operator. This usage was deprecated by the creation of Standard C, so now it means 'assign the logical inverse', as in a = !b. This is a good argument for always surrounding binary operators with spaces, just to make it clear to the humans reading the code what the compiler is thinking. I'm a...
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How to check for a valid Base64 encoded string

...ing. I updated my question with an implementation of the solution let me know if you see any problems with it. – Chris Mullins Jun 10 '11 at 18:05 ...
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How to Correctly handle Weak Self in Swift Blocks with Arguments

...e closure use [weak self]. If self will never be nil in the closure use [unowned self]. If it's crashing when you use [unowned self] I would guess that self is nil at some point in that closure, which is why you had to go with [weak self] instead. I really liked the whole section from the manual...
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Mercurial undo last commit

...o it because it keeps your history accurate and complete. If 2 years from now someone finds a bug in what you pulled down you can look in your (unused but saved) implementation of the same thing and go, "oh, I did it right". :) ...
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Stop Chrome Caching My JS Files

... As of Chrome 61.0.3163.100, it seems that the option now lives under More Tools/Network Conditions. "Developer Tools" option no longer exists. – justian17 Oct 17 '17 at 13:44 ...
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What's the best way of scraping data from a website? [closed]

...nd what data formats make up the responses. You will need a good working knowledge of HTTP as well as HTML and will probably want to find a decent piece of man in the middle proxy software. You will need to be able to inspect HTTP requests and responses and understand how the cookies and session in...
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How to prevent form from being submitted?

... } </script> <form onsubmit="return toSubmit();" > Demo Now, this may be not a good idea when making big projects. You may need to use Event Listeners. Please read more about Inline Events vs Event Listeners (addEventListener and IE's attachEvent) here. For I can not explain it m...
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Maven compile with multiple src directories

... This was a good idea a couple years ago but there are much better options now. build-helper listed above is my preferred options. – sal May 6 '11 at 1:51 5 ...
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How to rename a file using Python

..."Time Of Check to Time Of Use" bug, but it's unlikely to cause issues. (I know of no easy way around this - see here. – AnnanFay Sep 28 '19 at 16:59 2 ...
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How To Launch Git Bash from DOS Command Line?

...indow cmd, and this causes strange behavior. I put this in a .bat file and now all is well: @"%SYSTEMDRIVE%\Program Files\Git\bin\bash.exe" --login – Grault Sep 3 '15 at 21:36 ...