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Difference between \A \z and ^ $ in Ruby regular expressions
...re the \n.
My recommendation would just be completely stripping new lines from a username or email beforehand, since there's pretty much no legitimate reason for one. Then you can safely use EITHER \A \z or ^ $.
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Java Class.cast() vs. cast operator
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Not all information is held at runtime. As you can see from my example (Bar) foo does generate an error at compile time, but Bar.class.cast(foo) does not. In my opinion if it is used in this manner it should.
– Alexander Pogrebnyak
Oct 12 '0...
How to detect orientation change?
...e additional correct code because the compiler will no longer try infer it from your usage. Hence, if you add "@obj" to your rotate() func in your Swift 3.0 solution, the code will compile without the warning.
– Mythlandia
Jul 22 '18 at 6:20
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Change the name of a key in dictionary
... Python 3.7+. That is in general the position of old_key will be different from the position of new_key.
– norok2
Jan 24 at 20:16
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What is Vim recording and how can it be disabled?
...ed by things like delete, yank, and put. This means that you can yank text from the editor into a register, then execute it as a command.
– Cascabel
Oct 6 '09 at 20:13
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What is the difference between `git fetch origin` and `git remote update origin`?
In response to a question about pulling one commit at a time from a git repository , I was recommended to use git remote update instead of git fetch . I have read both man pages but cannot say I understood either in its entirety.
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How to take screenshot of a div with JavaScript?
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Sorry i have to comment this as it comes from google but WTF "irresponsible security risk" might i ask why, if you let javascript take a screenshot or a shot within given cords and return the BASE64 encoded data of it as a string no Security problem
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Undocumented NSURLErrorDomain error codes (-1001, -1003 and -1004) using StoreKit
... -1205,
NSURLErrorClientCertificateRequired = -1206,
NSURLErrorCannotLoadFromNetwork = -2000,
// Download and file I/O errors
NSURLErrorCannotCreateFile = -3000,
NSURLErrorCannotOpenFile = -3001,
NSURLErrorCannotCloseFile = -3002,
NSURLErrorCannotWriteToFile = ...
Why prefer two's complement over sign-and-magnitude for signed numbers?
...0 (0)
The same is true for subtraction.
Also, if you try to subtract 4 from 6 (two positive numbers) you can 2's complement 4 and add the two together 6 + (-4) = 6 - 4 = 2
This means that subtraction and addition of both positive and negative numbers can all be done by the same circuit in the c...
How do Python's any and all functions work?
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The code in question you're asking about comes from my answer given here. It was intended to solve the problem of comparing multiple bit arrays - i.e. collections of 1 and 0.
any and all are useful when you can rely on the "truthiness" of values - i.e. their value in a b...