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Python __call__ special method practical example
... I can use this special method, because one can simply create a new method and perform the same operation done in __call__ method and instead of calling the instance, you can call the method.
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Performance difference between IIf() and If
... "Alternative")
The first is basically C#'s ternary conditional operator and the second is its coalesce operator (return result unless it’s Nothing, in which case return "Alternative"). If has thus replaced IIf and the latter is obsolete.
Like in C#, VB's conditional If operator short-circuits,...
os.walk without digging into directories below
... Does this function actually "walk" through the whole structure and then delete the entries below a certain point? Or is something more clever going on? I'm not even sure how to check this with code. --python beginner
– mathtick
Aug 19 '10 at 18:05
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How to get browser width using JavaScript code?
...elevant portion is found on line 37 of dimensions.js. Here it is extracted and modified to work standalone:
function getWidth() {
return Math.max(
document.body.scrollWidth,
document.documentElement.scrollWidth,
document.body.offsetWidth,
document.documentElement.offsetWi...
How can you profile a Python script?
Project Euler and other coding contests often have a maximum time to run or people boast of how fast their particular solution runs. With Python, sometimes the approaches are somewhat kludgey - i.e., adding timing code to __main__ .
...
Postgres: SQL to list table foreign keys
...to list all foreign keys for a given table? I know the table name / schema and I can plug that in.
23 Answers
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Difference between using Throwable and Exception in a try catch
... highest "catch all" level of a thread where you want to log or otherwise handle absolutely everything that can go wrong. It would be more typical in a framework type application (for example an application server or a testing framework) where it can be running unknown code and should not be affecte...
makefile:4: *** missing separator. Stop
...relationship with tabs. All actions of every rule are identified by tabs. And, no, four spaces don't make a tab. Only a tab makes a tab.
To check, I use the command cat -e -t -v makefile_name.
It shows the presence of tabs with ^I and line endings with $. Both are vital to ensure that dependencie...
Run Java Code Online [closed]
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Ideone is the best site for the online code running, debugging and it provides extra performance stats also.
Without Sign Up, you can run code upto of maximum 5 sec, and for signup, upto a max of 15 sec. And for Signup, the code management and history is also too good.
However, it has...
Detect If Browser Tab Has Focus
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Yes, window.onfocus and window.onblur should work for your scenario:
http://www.thefutureoftheweb.com/blog/detect-browser-window-focus
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