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Confused about __str__ on list in Python [duplicate]
...ing an object uses str(); printing a list containing an object uses str() for the list itself, but the implementation of list.__str__() calls repr() for the individual items.
So you should also overwrite __repr__(). A simple
__repr__ = __str__
at the end of the class body will do the trick.
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How do I get the height and width of the Android Navigation Bar programmatically?
...ovable in Android. It has been part of Android since 3.0 as a replacement for hardware buttons. Here is a picture:
18 Answe...
How do I parse JSON with Objective-C?
...ns only as a fallback if you find that class unavailable at runtime.
So, for example:
NSData *returnedData = ...JSON data, probably from a web request...
// probably check here that returnedData isn't nil; attempting
// NSJSONSerialization with nil data raises an exception, and who
// knows how y...
How to get WordPress post featured image URL
...
Check the code below and let me know if it works for you.
<?php if (has_post_thumbnail( $post->ID ) ): ?>
<?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?>
<div id="custom-bg" style="...
How to step through Python code to help debug issues?
...
Yes! There's a Python debugger called pdb just for doing that!
You can launch a Python program through pdb by using pdb myscript.py or python -m pdb myscript.py.
There are a few commands you can then issue, which are documented on the pdb page.
Some useful ones to remem...
How to reorder data.table columns (without copying)
I'd like to reorder columns in my data.table x , given a character vector of column names, neworder :
2 Answers
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“ImportError: No module named” when trying to run Python script
...a script that launches, amongst other things, a python script. I get a ImportError: No module named ..., however, if I launch ipython and import the same module in the same way through the interpreter, the module is accepted.
...
Error renaming a column in MySQL
...... in fact, you also need to specify the datatype of the renamed column. For example:
ALTER TABLE `xyz` CHANGE `manufacurerid` `manufacturerid` INT;
Remember :
Replace INT with whatever your column data type is (REQUIRED)
Tilde/ Backtick (`) is optional
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How to sort in-place using the merge sort algorithm?
...th left this as an exercise (Vol 3, 5.2.5). There do exist in-place merge sorts. They must be implemented carefully.
First, naive in-place merge such as described here isn't the right solution. It downgrades the performance to O(N2).
The idea is to sort part of the array while using the rest as wo...
What does 'require: false' in Gemfile mean?
...d Jan 26 '11 at 1:51
Rob Di MarcoRob Di Marco
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