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The easiest way to transform collection to array?
...t a size 0 array, it will make a new array, meaning you have a small array and a large array being made when such is unnecessary.
– corsiKa
Jul 20 '10 at 21:42
4
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Python matplotlib multiple bars
...lotlib, when I tried to call the bar function multiple times, they overlap and as seen the below figure the highest value red can be seen only.
How can I plot the multiple bars with dates on the x-axes?
...
How can I find the length of a number?
...34567;
x.toString().length;
This process will also work forFloat Number and for Exponential number also.
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how to solve “ruby installation is missing psych” error?
...3. even though it was successfully installed, it complained about libyaml. and now every time i wanna install a gem (say rails) this warning shows up:
...
How to find out the number of CPUs using python
...is not in use), multiprocessing.cpu_count() is the way to go in Python 2.6 and newer. The following method falls back to a couple of alternative methods in older versions of Python:
import os
import re
import subprocess
def available_cpu_count():
""" Number of available virtual or physical CP...
PHP Warning: POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes in Unknown on l
...ath. C:\xampp\php or from
xampp folder.
2. Now open php.ini file and change the following:
1. post-max-size (change 8M to 800M).
2. upload-max-filesize (change 2M to 2000M).
3. Now stop the Apache server and MySQL.
4. Now restart Apache server and MySQL.
It worked fine after ...
Android Studio - debug keystore
Does Android Studio sign debug builds? If so, where is the keystore it uses to do it?
7 Answers
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Is object empty? [duplicate]
...y = Object.prototype.hasOwnProperty;
function isEmpty(obj) {
// null and undefined are "empty"
if (obj == null) return true;
// Assume if it has a length property with a non-zero value
// that that property is correct.
if (obj.length > 0) return false;
if (obj.length...
How to get the current time in Python
...
>>> print(datetime.datetime.now())
2009-01-06 15:08:24.789150
And just the time:
>>> datetime.datetime.now().time()
datetime.time(15, 8, 24, 78915)
>>> print(datetime.datetime.now().time())
15:08:24.789150
See the documentation for more information.
To save typing...
Is it safe to push_back an element from the same vector?
...s problem (or something very similar to it) as a potential defect in the standard:
1) Parameters taken by const reference can be changed during execution
of the function
Examples:
Given std::vector v:
v.insert(v.begin(), v[2]);
v[2] can be changed by moving elements of vect...