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Fastest way to copy file in node.js
...m (copying/reading/writing etc). I'd like to know which methods are the fastest, and I'd be happy to get an advice. Thanks.
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Check if an array is empty or exists
...ength; // => "number"
Case Empty Array
Now since we tested all other possibilities, we're talking to an instance of Array. In order to make sure it's not empty, we ask about number of elements it's holding, and making sure it has more than zero elements.
firstArray = [];
firs...
Inserting multiple rows in mysql
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BEGIN;
INSERT INTO test_b (price_sum)
SELECT price
FROM test_a;
INSERT INTO test_c (price_summ)
SELECT price
FROM test_a;
COMMIT;
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How to convert int to NSString?
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Primitives can be converted to objects with @() expression. So the shortest way is to transform int to NSNumber and pick up string representation with stringValue method:
NSString *strValue = [@(myInt) stringValue];
or
NSString *strValue = @(myInt).stringValue;
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How to convert SecureString to System.String?
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@radbyx In a quick and dirty test setup, I can call it 1000 times in 76ms. The first invocation takes 0.3 ms and subsequent invocations ~0.07ms. How large is your secure string and which version of the framework are you using?
– Ras...
Install .ipa to iPad with or without iTunes
I have the .ipa from PhoneGap build and I need to test it. I got provisioning profile from Developer account.
25 Answers
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Characters allowed in a URL
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I tested it by requesting my website (apache) with all available chars on my german keyboard as URL parameter:
http://example.com/?^1234567890ß´qwertzuiopü+asdfghjklöä#<yxcvbnm,.-°!"§$%&/()=? `QWERTZUIOPÜ*ASDFGH...
Return positions of a regex match() in Javascript?
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@OnurYıldırım - here's a jsfiddle of it working...I've tested it all the way back to IE5...works great: jsfiddle.net/6uwn1vof
– Jimbo Jonny
Mar 29 '16 at 22:34
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What are good uses for Python3's “Function Annotations”
...used for pre-condition checking:
def validate(func, locals):
for var, test in func.__annotations__.items():
value = locals[var]
msg = 'Var: {0}\tValue: {1}\tTest: {2.__name__}'.format(var, value, test)
assert test(value), msg
def is_int(x):
return isinstance(x, int...
how do i block or restrict special characters from input fields with jquery?
...omCharCode(!event.charCode ? event.which : event.charCode);
if (!regex.test(key)) {
event.preventDefault();
return false;
}
});
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