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How to run a shell script on a Unix console or Mac terminal?
...er from the same folder, still using #!hashbang in scripts.
As example a php7.2 executable copied from /usr/bin is in a folder along a hello script.
#!./php7.2
<?php
echo "Hello!";
To run it:
./hello
Which behave just as equal as:
./php7.2 hello
...
Evaluating a mathematical expression in a string
...p://pyparsing.wikispaces.com/message/view/home/15549426
'''
__note__ = '''
All I've done is rewrap Paul McGuire's fourFn.py as a class, so I can use it
more easily in other places.
'''
class NumericStringParser(object):
'''
Most of this code comes from the fourFn.py pyparsing example
...
Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
...loop condition to be a boolean, such as while (true) or while (1 == 1). In PHP, keywords are case-insensitive but the language prefers the capitalization TRUE.
However, for (;;) is always completely correct in all of those languages.
...
How to read/process command line arguments?
I am originally a C programmer. I have seen numerous tricks and "hacks" to read many different arguments.
17 Answers
...
Get average color of image via Javascript
...ogle it.
I have accomplished the above execution in RGB color space using PHP/GD here: https://gist.github.com/cf23f8bddb307ad4abd8
This however is very computationally expensive. It will crash your system on large images, and will definitely crash your browser if you try it in the client. I have ...
How does _gaq.push(['_trackPageLoadTime']) work?
... from being an opt-in feature to being an opt-out feature.)
_setSiteSpeedSampleRate is the new function for setting the sample rate on this feature; its default value is 1 (as in 1%). To opt out of using this the Site Speed feature, you have to pass a 0 to this function:
_gaq.push(["_setSiteSpeedS...
JavaScript: clone a function
...ly way? I would improve on this a bit so that it does not wrap twice when called twice, but otherwise, ok.
– Andrey Shchekin
Dec 2 '09 at 19:25
...
What is move semantics?
...
I find it easiest to understand move semantics with example code. Let's start with a very simple string class which only holds a pointer to a heap-allocated block of memory:
#include <cstring>
#include <algorithm>
class string
{
char* data;
public:
string...
When should I write the keyword 'inline' for a function/method?
... contribute to all of the great answers in this thread with a convincing example to disperse any remaining misunderstanding.
Given two source files, such as:
inline111.cpp:
#include <iostream>
void bar();
inline int fun() {
return 111;
}
int main() {
std::cout << "inline111: f...
Difference between MEAN.js and MEAN.io
...t.
From the website it looks like that their core skill set is Drupal (a PHP content management system) and only lately they started using Node.js and AngularJS.
Lately I was reading the Mean.js Blog and things became clearer. My understanding is that the main Javascript developer (Amos Haviv) le...