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Getting number of elements in an iterator in Python
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101
No. It's not possible.
Example:
import random
def gen(n):
for i in xrange(n):
if...
Using Jasmine to spy on a function without an object
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answered Mar 1 '12 at 6:30
ndpndp
19.3k44 gold badges3232 silver badges4848 bronze badges
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RegEx for Javascript to allow only alphanumeric
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/^[a-z0-9]+$/i
^ Start of string
[a-z0-9] a or b or c or ... z or 0 or 1 or ... 9
+ one or more times (change to * to allow empty string)
$ end of string
/i case-insensitive
Update (supporting ...
Check if all values of array are equal
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const allEqual = arr => arr.every( v => v === arr[0] )
allEqual( [1,1,1,1] ) // true
Or one-liner:
[1,1,1,1].every( (val, i, arr) => val === arr[0] ) // true
Array.prototype.every (from MDN) :
The every() method tests whether all elements in the array pass the...
pass **kwargs argument to another function with **kwargs
...t lists
– dinosaur
Sep 19 '15 at 17:05
8
An actual code example would make this answer considerab...
rails simple_form - hidden field - create?
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310
try this
= f.input :title, :as => :hidden, :input_html => { :value => "some value" }
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Why does a RegExp with global flag give wrong results?
...o on subsequent matches it will start from the last used index, instead of 0. Take a look:
var query = 'Foo B';
var re = new RegExp(query, 'gi');
var result = [];
result.push(re.test('Foo Bar'));
alert(re.lastIndex);
result.push(re.test('Foo Bar'));
If you don't want to manually reset la...
Referencing another schema in Mongoose
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edited Aug 1 '13 at 19:04
Gorkem Yurtseven
2,63277 gold badges2626 silver badges4444 bronze badges
an...
Difference between jQuery’s .hide() and setting CSS to display: none
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209
From the jQuery page about .hide():
"The matched elements will be hidden immediately, with ...
When to use std::forward to forward arguments?
C++0x shows an example of using std::forward :
3 Answers
3
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