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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
... can be used to detect if a variable has been already initialized. Additionally and more ideal is the solution of empty() since it does not generate a warning or error message if the variable is not initialized.
From PHP documentation:
No warning is generated if the variable does not exist. T...
SASS - use variables across multiple files
I would like to keep one central .scss file that stores all SASS variable definitions for a project.
6 Answers
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How to effectively work with multiple files in Vim
...e and close a tab, you can also use ZZ instead of :wq (just like would normally save and close)
– Andreas Grech
May 5 '10 at 14:34
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Good introduction to the .NET Reactive Framework [closed]
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I've been dragging my feet learning about Rx because all of the learning materials are in the form of videos. +1 for providing this text-based resource.
– Daniel Schilling
Jan 8 '14 at 19:44
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What is that “total” in the very first line after ls -l? [closed]
...he files with a line
`total BLOCKS', where BLOCKS is the total disk allocation for all
files in that directory.
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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
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how to delete all cookies of my website in php
I'm wondering if I can delete all my website's cookies when a user click on logout, because I used this as function to delete cookies but it isn't work properly:
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What is `mt=8` in iTunes links for the App Store?
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@FabianFernandez See here. Its all about affiliation -- stackoverflow.com/questions/17437785/…
– Anindya Sengupta
Aug 8 '14 at 15:04
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What does it mean that Javascript is a prototype based language?
...instream] object-oriented languages to use prototypal inheritance. Almost all other object-oriented languages are classical.
In classical inheritance, the programmer writes a class, which defines an object. Multiple objects can be instantiated from the same class, so you have code in one place wh...
What's the difference between an element and a node in XML?
...M considers nodes more basic (primitive) than elements, when "element" actually refers to the most basic building block in English.
– BoltClock♦
Dec 12 '12 at 6:01
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