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Why are Python lambdas useful? [closed]
...where you can pass functions to other functions to do stuff. Example:
mult3 = filter(lambda x: x % 3 == 0, [1, 2, 3, 4, 5, 6, 7, 8, 9])
sets mult3 to [3, 6, 9], those elements of the original list that are multiples of 3. This is shorter (and, one could argue, clearer) than
def filterfunc(x):
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Is an array name a pointer?
..., and you can put a value in one of them with an assignment, like this:
a[3] = 9;
Here is a pointer:
int *p;
p doesn't contain any spaces for integers, but it can point to a space for an integer. We can, for example, set it to point to one of the places in the array a, such as the first one:
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Strip all non-numeric characters from string in JavaScript
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csjcsj
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Which equals operator (== vs ===) should be used in JavaScript comparisons?
...ct consistently with one another (except in a special case).
var a = [1,2,3];
var b = [1,2,3];
var c = { x: 1, y: 2 };
var d = { x: 1, y: 2 };
var e = "text";
var f = "te" + "xt";
a == b // false
a === b // false
c == d // false
c === d // false
e == f...
Find size of an array in Perl
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237
The first and third ways are the same: they evaluate an array in scalar context. I would consid...
Grep only the first match and stop
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edited Jun 11 '19 at 12:34
Trevor Boyd Smith
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How to perform Callbacks in Objective-C
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Jon HessJon Hess
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How to vertically align an image inside a div
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35 Answers
35
Active
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How to check if an object is a certain type
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edited Aug 3 '17 at 12:08
Sebastian Brosch
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