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Disabling and enabling a html input button
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485
Using Javascript
Disabling a html button
document.getElementById("Button").disabled = true;...
How do I test for an empty JavaScript object?
After an AJAX request, sometimes my application may return an empty object, like:
57 Answers
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How to convert an IPv4 address into a integer in C#?
I'm looking for a function that will convert a standard IPv4 address into an Integer. Bonus points available for a function that will do the opposite.
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A fast method to round a double to a 32-bit int explained
... of mantissa.
Now, to the magic number; as you correctly stated, 6755399441055744 is 2^51 + 2^52; adding such a number forces the double to go into the "sweet range" between 2^52 and 2^53, which, as explained by Wikipedia here, has an interesting property:
Between 252=4,503,599,627,370,496 an...
How to use double or single brackets, parentheses, curly braces
...me for ((i=0; i<10000000; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)); do [ "$i" = 1000 ]; done
real 0m33.478s
user 0m33.478s
sys 0m0.000s
The braces, in addition to delimiting a variable name are used for par...
C# switch statement limitations - why?
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edited May 23 '17 at 11:46
Community♦
111 silver badge
answered Sep 4 '08 at 22:51
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What does the star operator mean, in a function call?
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s = sum(1, 2, c=10, d=15)
Also see section 4.7.4 - Unpacking Argument Lists of the Python documentation.
Additionally you can define functions to take *x and **y arguments, this allows a function to accept any number of positional and/or named arguments that aren't...
How to install trusted CA certificate on Android device?
...ave to root your device to install new certificates.
From Android KitKat (4.0) up to Nougat (7.0) it's possible and easy. I was able to install the Charles Web Debbuging Proxy cert on my un-rooted device and successfully sniff SSL traffic.
Extract from http://wiki.cacert.org/FAQ/ImportRootCert
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Transpose/Unzip Function (inverse of zip)?
...pecial * operator.
>>> zip(*[('a', 1), ('b', 2), ('c', 3), ('d', 4)])
[('a', 'b', 'c', 'd'), (1, 2, 3, 4)]
The way this works is by calling zip with the arguments:
zip(('a', 1), ('b', 2), ('c', 3), ('d', 4))
… except the arguments are passed to zip directly (after being converted to...
What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...ve references, as applying. Hence the minimal ranges as set out in C99 5.2.4.2.1 Sizes of integer types <limits.h> are applicable.
In terms of long double, that's actually a floating point value rather than an integer. Similarly to the integral types, it's required to have at least as much ...