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What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
..... which in the majority case is going to be a a runtime array. You can avoid the overhead of looking for the global constructor by just using []. It may seem small, but when you're shooting for near real-time performance in your app, it can make a difference.
– coderjoe
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What is the maximum amount of RAM an app can use?
... curious about this question concerning the memory management of the Android operating system so I hope for a quite detailed answer on that topic.
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RVM: Uninstalling all gems of a gemset
...sets. I want to remove all gems of a gemset. Is there a way do to this, besides uninstalling the gemset?
7 Answers
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Write bytes to file
... you are adding data to a file using a loop, a BinaryWriter object can provide better performance because you only have to open and close the file once.' I'm using a loop. I use the example from @0A0D and changed 'FileMode.Create' to 'FileMode.Append'.
– John Doe
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foldl versus foldr behavior with infinite lists
...be a frequent source of confusion, so here's a more general overview:
Consider folding a list of n values [x1, x2, x3, x4 ... xn ] with some function f and seed z.
foldl is:
Left associative: f ( ... (f (f (f (f z x1) x2) x3) x4) ...) xn
Tail recursive: It iterates through the list, producing th...
How does std::move() transfer values into RValues?
... as lvalue (and implicit conversion from lvalue to rvalue reference is forbidden by standard).
Here's what happens when we call move with lvalue:
Object a; // a is lvalue
Object b = std::move(a);
and corresponding move instantiation:
// move with [T = Object&]
remove_reference<Object&a...
How do RVM and rbenv actually work?
...ng. Every time you install a new version of Ruby or install a gem that provides a command, run rbenv rehash to make sure any new commands are shimmed.
These shims live in a single directory (~/.rbenv/shims by default). To use rbenv, you need only add the shims directory to the front of your PATH:
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Why does an overridden function in the derived class hide other overloads of the base class?
Consider the code :
4 Answers
4
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
...ou want to proceed.
They'll leave implementation details to you, but, the idea is, once you've determined whether or not to track the user in Google Analytics, if the answer is to not track, you'd set the following property to true before Google Analytics runs:
window['ga-disable-UA-XXXXXX-Y'] = t...
jQuery/Javascript function to clear all the fields of a form [duplicate]
...reset() method to reset the entire form to its default state.
Example provided by Ryan:
$('#myForm')[0].reset();
Note: This may not reset certain fields, such as type="hidden".
UPDATE
As noted by IlyaDoroshin the same thing can be accomplished using jQuery's trigger():
$('#myForm').trigger("...