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Double Iteration in List Comprehension
...u want an array of words.
# Without list comprehension
list_of_words = []
for sentence in text:
for word in sentence:
list_of_words.append(word)
return list_of_words
I like to think of list comprehension as stretching code horizontally.
Try breaking it up into:
# List Comprehension
...
How to list the size of each file and directory and sort by descending size in Bash?
...ory and run following command:
du -a --max-depth=1 | sort -n
OR add -h for human readable sizes and -r to print bigger directories/files first.
du -a -h --max-depth=1 | sort -hr
share
|
improv...
Get class list for element with jQuery
...
var classList = document.getElementById('divId').className.split(/\s+/);
for (var i = 0; i < classList.length; i++) {
if (classList[i] === 'someClass') {
//do something
}
}
jQuery does not really help you here...
var classList = $('#divId').attr('class').split(/\s+/);
$.each(...
Unicode Processing in C++
...
Use ICU for dealing with your data (or a similar library)
In your own data store, make sure everything is stored in the same encoding
Make sure you are always using your unicode library for mundane tasks like string length, capitaliz...
How do I make UITableViewCell's ImageView a fixed size even when the image is smaller
I have a bunch of images I am using for cell's image views, they are all no bigger than 50x50. e.g. 40x50, 50x32, 20x37 .....
...
Importing files from different folder
...
Note: This answer was intended for a very specific question. For most programmers coming here from a search engine, this is not the answer you are looking for. Typically you would structure your files into packages (see other answers) instead of modifying ...
How do you run a single test/spec file in RSpec?
I want to be able to run a single spec file's tests — for the one file I'm editing, for example. rake spec executes all the specs. My project is not a Rails project, so rake spec:doc doesn't work.
...
How to get the build/version number of your Android application?
I need to figure out how to get or make a build number for my Android application. I need the build number to display in the UI.
...
How to enumerate an object's properties in Python?
...
for property, value in vars(theObject).items():
print(property, ":", value)
Be aware that in some rare cases there's a __slots__ property, such classes often have no __dict__.
...
How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
...t; df[df.isnull().any(axis=1)]
0 1 2
1 0 NaN 0
2 0 0 NaN
[For older pandas:]
You could use the function isnull instead of the method:
In [56]: df = pd.DataFrame([range(3), [0, np.NaN, 0], [0, 0, np.NaN], range(3), range(3)])
In [57]: df
Out[57]:
0 1 2
0 0 1 2
1 0 Na...