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Command line for looking at specific port
...ic port from the Windows command line? I know I can use netstat to examine all ports but netstat is slow and looking at a specific port probably isn't.
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Multiple lines of text in UILabel
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UILineBreakModeWordWrap is actually the default so you don't need the first line.
– Jarred Olson
Jul 30 '12 at 18:23
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A migration to add unique constraint to a combination of columns
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Nope, it's all good. My bad! The unique constraint comes with the unique index.
– Paul Cantrell
Aug 24 '11 at 16:34
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Get index of selected option with jQuery
... seem to work in the browsers that I tested, but the option tags doesn't really correspond to actual elements in all browsers, so the result may vary.
Just use the selectedIndex property of the DOM element:
alert($("#dropDownMenuKategorie")[0].selectedIndex);
Update:
Since version 1.6 jQuery ha...
Arrays vs Vectors: Introductory Similarities and Differences [closed]
...ze; you can't resize an array in C++ (unless it's an array of POD and it's allocated with malloc);
their size must be a compile-time constant unless they are allocated dynamically;
they take their storage space depending from the scope where you declare them;
if dynamically allocated, you must expli...
How to get UTC timestamp in Ruby?
... In my opninion an object is timestampy enough and you have still all the freedom you need. Reducing it to a scalar value is in most cases not really necessary.
– Joey
Jan 12 '12 at 6:27
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git: fatal unable to auto-detect email address
...--global user.email "you@example.com"
Already been asked: Why Git is not allowing me to commit even after configuration?
To be sure Run:
$ git config --local -l
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Iterate through every file in one directory
...lways include . and .. (the current and parent directories). You will generally not want to work on them, so you can use Dir::each_child or Dir::children (as suggested by ma11hew28) or do something like this:
Dir.foreach('/path/to/dir') do |filename|
next if filename == '.' or filename == '..'
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Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...d effects are executed faster and are more 'tweakable'. With webGL there really is no limit.
Both canvas and webGL are html5 goodies. Usually the devices that support one will support and the other.
So, to sum up:
merging the drawing API code and the rest (integration): similar
ease of use:
(...
What are copy elision and return value optimization?
... is an optimization implemented by most compilers to prevent extra (potentially expensive) copies in certain situations. It makes returning by value or pass-by-value feasible in practice (restrictions apply).
It's the only form of optimization that elides (ha!) the as-if rule - copy elision can be a...