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How do I copy a hash in Ruby?
I'll admit that I'm a bit of a ruby newbie (writing rake scripts, now). In most languages, copy constructors are easy to find. Half an hour of searching didn't find it in ruby. I want to create a copy of the hash so that I can modify it without affecting the original instance.
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IPC performance: Named Pipe vs Socket
...urely trying to optimize something that isn't yet problematic. Unless you know sockets are going to be a bottleneck, I'd just use them.
A lot of people who swear by named pipes find a little savings (depending on how well everything else is written), but end up with code that spends more time block...
Static constant string (class member)
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In C++11 you can do now:
class A {
private:
static constexpr const char* STRING = "some useful string constant";
};
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How to define a function in ghci across multiple lines?
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GHCi now has a multiline-input mode, enabled with :set +m. For example,
Prelude> :set +m
Prelude> let fac 0 = 1
Prelude| fac n = n * fac (n-1)
Prelude|
Prelude> fac 10
3628800
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PhantomJS failing to open HTTPS site
...pdate to provide verbose SSL errors with another command line argument. I know that SSL error information is available in Qt, but most times people just suppress the errors without handling them explicitly.
– Cameron Tinker
Apr 16 '13 at 15:50
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How can I get the current PowerShell executing file?
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@CollinChaffin: agreed and now (2017) the least currently supported is Windows 7 so there is no reason not to use $PSCommandPath if legacy (WindowsXP) is not required.
– tukan
Dec 11 '17 at 16:30
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How to make an element width: 100% minus padding?
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This is why we have box-sizing in CSS.
I’ve edited your example, and now it works in Safari, Chrome, Firefox, and Opera. Check it out: http://jsfiddle.net/mathias/Bupr3/
All I added was this:
input {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: bor...
How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
...re performing a bitwise logical operation on an integer (which, for all I know, may be stored as two's complement or something like that...)
Two's complement explains how to represent a number in binary. I think I was right.
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UltiSnips and YouCompleteMe
...ger the snippet completion with shift-tab, but it doesn't work for some unknown reason. I could use caps as the trigger, but so far I've found no way to do that.
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What's the difference between '$(this)' and 'this'?
...u get a set of elements back jQuery turns it into a jQuery object. If you know you only have one result, it's going to be in the first element.
$("#myDiv")[0] === document.getElementById("myDiv");
And so on...
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