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Python (and Python C API): __new__ versus __init__
...init__ reinitialises the object
[3, 4]
As to why they're separate (aside from simple historical reasons): __new__ methods require a bunch of boilerplate to get right (the initial object creation, and then remembering to return the object at the end). __init__ methods, by contrast, are dead simple,...
Checking if an object is a given type in Swift
...ld only use as without the ? if there is no way your program could recover from the object not being of that type because the program will immediately halt if it is not. Using the ? in the if statement allows the program to continue.
– drewag
Jun 6 '14 at 23:55...
How can I detect if a browser is blocking a popup?
...r user input, or something important), but the popup blocker prevents this from happening.
8 Answers
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Passing parameters to a Bash function
...ters in a Bash function, but what comes up is always how to pass parameter from the command line.
7 Answers
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How to make a HTTP request using Ruby on Rails?
I would like to take information from another website. Therefore (maybe) I should make a request to that website (in my case a HTTP GET request) and receive the response.
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Encode html entities in javascript
...ivalents, which is simply &#nnn; where nnn is the unicode value we get from charCodeAt.
See it in action here: http://jsfiddle.net/E3EqX/13/ (this example uses jQuery for element selectors used in the example. The base code itself, above, does not use jQuery)
Making these conversions does not ...
How to list all installed packages and their versions in Python?
...uce the same output as pip freeze by calling:
pip list
Note
The output from pip list is formatted differently, so if you have some shell script that parses the output (maybe to grab the version number) of freeze and want to change your script to call list, you'll need to change your parsing code...
Creating java date object from year,month,day
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Beware, the months used to be numbered from zero in Java 7. Use constants to avoid trouble.
– jediz
Jun 6 '18 at 9:31
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Open file in a relative location in Python
...your actual working directory is. For example, you may not run the script from the directory the file is in. In this case, you can't just use a relative path by itself.
If you are sure the file you want is in a subdirectory beneath where the script is actually located, you can use __file__ to hel...
Get list of data-* attributes using javascript / jQuery
...jQuery's attempt at "deserializing" the value found in the attribute (i.e. from master: !jQuery.isNaN( data ) ? parseFloat( data ) : ...). I had product serial numbers in my attribute such as data-serial="00071134" which jQuery munged into a number 71134, forcing me to revert to the less elegant .at...