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Print array elements on separate lines in Bash?
...here c is
the first char of IFS).
You almost always want "$@". Same goes for "${arr[@]}".
Always quote them!
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Use of “this” keyword in formal parameters for static methods in C#
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This is an extension method. See here for an explanation.
Extension methods allow developers to add new methods to the public
contract of an existing CLR type, without having to sub-class it or
recompile the original type. Extension Methods help blend th...
PHP: Move associative array element to beginning of array
...rray['one']] + $myArray;
Array keys are unique, so it would be impossible for it to exist in two locations.
See further at the doc on Array Operators:
The + operator returns the right-hand array appended to the left-hand array; for keys that exist in both arrays, the elements from the left-hand ar...
How to sort a list/tuple of lists/tuples by the element at a given index?
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@Cemre as for the second example, sort here is a method of List object of Python, which receives a lambda function as its key parameter. You may name it as tup, or t, or whatever you like and it'll still work. tup here specifies index ...
The required anti-forgery form field “__RequestVerificationToken” is not present Error in user Regis
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You have [ValidateAntiForgeryToken] attribute before your action. You also should add @Html.AntiForgeryToken() in your form.
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How to create a new java.io.File in memory?
...omments of Andreas’ answer) could also be mentioned, because if you cant for some reason write to the hard-drive, then that could be a way around it.
– FableBlaze
Jan 17 at 12:19
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Find region from within an EC2 instance
...sentially because that IP is an APIPA). Also there is no way to get this information directly from inside the instance without connecting to a metadata source. This assumes that the 169.254.169.254 API is available, and your script should handle network failures accordingly. ec2-metadata is just a w...
How to Import .bson file format on mongodb
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mongorestore -d db_name -c collection_name /path/file.bson
Incase only for a single collection.Try this:
mongorestore --drop -d db_name -c collection_name /path/file.bson
For restoring the complete folder exported by mongodump:
mongorestore -d db_name /path/
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Positioning element at center of screen
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For those seeking a dynamic height: stackoverflow.com/questions/396145/…
– pulkitsinghal
Aug 20 '13 at 20:20
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Detect Retina Display
...e does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad: it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator.
I test for the -displayLinkWithTarget:selector: method on the main screen which exists in iOS4.x but not iOS3.2, and then che...