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Naming cookies - best practices [closed]
...ou have a _COOKIE named "x" and a querystring param named "x", and you ask for $_REQUEST["x"], you get the cookie value when you might want/expect the GET param. This is especially problematic if your cookies are scoped to your website root "/", and not to the folder where they are consumed.
So I...
Can I access constants in settings.py from templates in Django?
..._URL available to the template as {{ MEDIA_URL }}, etc.
If you're looking for access to other constants in the settings, then simply unpack the constants you want and add them to the context dictionary you're using in your view function, like so:
from django.conf import settings
from django.shortc...
Routes with Dash `-` Instead of Underscore `_` in Ruby on Rails
...want my urls to use dash - instead of underscore _ as word separators. For example controller/my-action instead of controller/my_action .
...
Bash empty array expansion with `set -u`
... already the recommendation in ikegami's answer, but there's a lot of misinformation and guesswork in this thread. Other patterns, such as ${arr[@]-} or ${arr[@]:0}, are not safe across all major versions of Bash.
As the table below shows, the only expansion that is reliable across all modern-ish B...
Check a radio button with javascript
For some reason, I can't seem to figure this out.
6 Answers
6
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How to install therubyracer gem on 10.10 Yosemite?
...ified
then just bundle your project gems
this is the only way it worked for me on 10.10 (ruby 2.1.2)
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find vs find_by vs where
...
Model.all
Model.first
find_by is used as a helper when you're searching for information within a column, and it maps to such with naming conventions. For instance, if you have a column named name in your database, you'd use the following syntax:
Model.find_by(name: "Bob")
.where is more of a ...
“Failed to load platform plugin ”xcb“ ” while launching qt5 app on linux without qt installed
I wrote application for linux which uses Qt5.
17 Answers
17
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Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Shell脚本示例看个例子吧：#! bin shcd ~mkdir shell_tutcd shell_tutfor ((i=0; i<10; i++)); do touch test_$i.txt...
什么是Shell脚本
示例
看个例子吧：
#!/bin/sh
cd ~
mkdir shell_tut
cd shell_tut
for ((i=0; i<10; i++)); do
touch test_$i.txt
done
示例解释...
C++ Dynamic Shared Library on Linux
...s
{
public:
MyClass();
/* use virtual otherwise linker will try to perform static linkage */
virtual void DoSomething();
private:
int x;
};
#endif
myclass.cc
#include "myclass.h"
#include <iostream>
using namespace std;
extern "C" MyClass* create_object()
{
return new MyClass...