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Whether a variable is undefined [duplicate]
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if(undefinedVar) will throw an error, but if(someObj.undefinedProperty) will not. In the latter case, you can also skip typeof and use === undefined (or !==), without quotes.
– eyelidlessness
Sep 28 '09 at 8:56
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What is memory fragmentation?
...typical scenarios. This results in out of memory exceptions, or allocation errors (i.e. malloc returns null).
The easiest way to think about this is to imagine you have a big empty wall that you need to put pictures of varying sizes on. Each picture takes up a certain size and you obviously can't s...
How to remove the first character of string in PHP?
...et($str[0])
will not work as you cannot unset part of a string:-
Fatal error: Cannot unset string offsets
What is the difference between LR, SLR, and LALR parsers?
...h it, and that count is needed for the L(AL)R versions in practice anyway.
ERROR: If neither SHIFT nor REDUCE is possible, a syntax error is declared.
So, if they all the use the same machinery, what's the point?
The purported value in SLR is its simplicity in implementation; you don't have to sc...
jquery select change event get selected option
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I copied your code to IE 11 and got an error. I ended up with this.options[ this.options.selectedIndex ]. Mozilla says is supported by Firefox from 26, IE No support.
– Bernhard Döbler
Dec 14 '16 at 8:36
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is there a css hack for safari only NOT chrome?
...lem of which order the code is listed in the style sheets, if not just CSS errors. Please do test the hacks here on the test site. If it works there, that means the hack really is working for your setup, but it is something else that needs to be resolved. People here really do love to help, or at le...
What is the C runtime library?
...curate) at runtime are implemented in the runtime library, e.g. some logic errors, array bounds checking, dynamic type checking, exception handling and possibly debugging functionality. For this reason, some programming bugs are not discovered until the program is tested in a "live" environment with...
C: Run a System Command and Get Output? [duplicate]
... Redirecting stderr to stdout may be a good idea, so you catch errors.
– user25148
Mar 14 '09 at 17:12
how...
Mongoose: Get full list of users
...rray;
}).catch(function(err){
if (err) {
throw new Error(err.message);
}
});
}
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How to reset (clear) form through JavaScript?
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I get next error: TypeError: document.getElementById(...).reset is not a function[Learn More]. I use FormValidate plugin for form. its resetForm does not reset form too =( Any suggestions?
– Eugen Konkov
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