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Drop data frame columns by name
...comma, you use the "list" way of selecting, which means that even when you extract a single column, you still get a data frame returned. If you use the "matrix" way, as you do, you should be aware that if you only select a single column, you get a vector instead of a data frame. To avoid that, you n...
Check if PHP session has already started
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An example for testing if session_id() returns empty string in an include file:
– tgoneil
Oct 5 '12 at 8:05
3
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How do you change the size of figures drawn with matplotlib?
... make it work I need to call plt.rcParams["figure.figsize"] = (20,3) in an extra cell. When I call it in the same cell as the import statement, it gets ignored.
– asmaier
May 11 '18 at 7:33
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When do you use map vs flatMap in RxJava?
...onError handler for you.
Observable.from(jsonFile).map(new Func1<File, String>() {
@Override public String call(File file) {
try {
return new Gson().toJson(new FileReader(file), Object.class);
} catch (FileNotFoundException e) {
// this exception is...
Git: How to squash all commits on branch
... needs, you can reset with origin/master as well). This will reset all the extra commits in your feature_branch, but without changing any of your file changes locally.
git reset --soft master
Step 2:
Add all of the changes in your git repo directory, to the new commit that is going to be created. A...
Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
...to open and use a .so or .dll that wasnt there at compile that or just add extra functionality, like plugins.
– rapadura
Mar 13 '12 at 16:49
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How to parse JSON in Python?
...on out of. For the purposes of this, let's set it to some simple JSON in a string:
5 Answers
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Why does javascript replace only first instance when using replace? [duplicate]
...C#/.NET class library (and most other sensible languages), when you pass a String in as the string-to-match argument to the string.replace method, it doesn't do a string replace. It converts the string to a RegExp and does a regex substitution. As Gumbo explains, a regex substitution requires the g...
TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes
...very occasional multi-byte characters, so close to one-byte-per-letter. An extra character has to be allowed for inter-word spaces, so I've rounded down from 5.8 bytes per word. Languages with lots of accents such as say Polish would store slightly fewer words, as would e.g. German with longer words...
How to repeat a “block” in a django template
...My Cool Website{% endblock %}{% endblock %}{% endblock %}
Requires an extra file unfortunately, but doesn't require you to pass the title from the view.
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