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Explain Python entry points?
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edited Oct 23 '19 at 10:33
Paolo
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answered Ap...
Pass a data.frame column name to a function
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109
You can just use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 &l...
What is the meaning of the term arena in relation to memory?
... For example:
char * arena = malloc(HUGE_NUMBER);
unsigned int current = 0;
void * my_malloc(size_t n) { current += n; return arena + current - n; }
The point is that you get full control over how the memory allocation works. The only thing outside your control is the single library call for th...
Using do block vs braces {}
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102
Ruby cookbook says bracket syntax has higher precedence order than do..end
Keep in mind tha...
What's the difference between Sender, From and Return-Path?
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answered Dec 6 '10 at 14:37
Shawn D.Shawn D.
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How to detect my browser version and operating system using JavaScript?
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10 Answers
10
Active
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What, why or when it is better to choose cshtml vs aspx?
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edited Jun 6 '12 at 12:06
answered Jun 6 '12 at 11:50
Jo...
Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...otoMakoto
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2
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How do I check if a number is a palindrome?
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50 Answers
50
Active
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How to disable scrolling temporarily?
...ed with scrolling.
[Working demo]
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {
e.preventDefault();
}
function preventDefaultForScrollKeys(e) {
if (keys[e.keyCode]) ...