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Test for existence of nested JavaScript object key
...bj /*, level1, level2, ... levelN*/) {
var args = Array.prototype.slice.call(arguments, 1);
for (var i = 0; i < args.length; i++) {
if (!obj || !obj.hasOwnProperty(args[i])) {
return false;
}
obj = obj[args[i]];
}
return true;
}
var test = {level1:{level2:{level3:'leve...
How to redirect the output of an application in background to /dev/null
...ot terminate you can use:
nohup yourcommand &
Without any parameter all output lands in nohup.out
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Alter table add multiple columns ms sql
...eded here
HasText bit);
You need to remove the brackets and make sure all columns have a comma where necessary.
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How to implement a unique index on two columns in rails
...st can remove the indexes who were just for one column or if I have to use all three indexes:
1 Answer
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How to get the last element of a slice?
...eft it outside consciously. It was non-obvious and prone to errors. Go overall is circumspect about 'too much meaning'; it also doesn't feature method/operator overloading, default values for function params, etc. which IMHO goes in a similar philosophical vein. See this discussion and others: group...
What is the size of an enum in C?
...set of enum values, but I need each enum value to be 64 bits wide. If I recall correctly, an enum is generally the same size as an int; but I thought I read somewhere that (at least in GCC) the compiler can make the enum any width they need to be to hold their values. So, is it possible to have an e...
jQuery clone() not cloning event bindings, even with on()
...ations. They work great and have been tested. However, I have run into a small problem which I am having trouble understanding.
...
Adjusting Eclipse console size
...d, I would strongly recommend setting a high limit rather than no limit at all. If you forget to clean your console, you can run Eclipse out of heap space, IIRC.
– Matt Ball
Apr 8 '10 at 14:27
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How do you get the file size in C#?
...
Surround it with try/catch block and check all possible exceptions as described here: SecurityException, UnauthorizedAccessException, PathTooLongException, NotSupportedException and - dependend on your use case - ArgumentNullException and ArgumentException
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Is there a “default” MIME type?
...lps convey to the recipient what to do with the data.
"unknown" doesn't really add anything over this, except to confuse clients who don't support random unofficial MIME types. Ditto for application/binary; it's just a non-standard way of restating "octet-stream".
This is the answer to "What can ...