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Volley Android Networking Library
... Does anyone else get "volley is not a vaild project (AndroidManifest.xml not found)
– Ersen Osman
Feb 18 '15 at 19:25
8
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How to extend an existing JavaScript array with another array, without creating a new array
...to extend an existing JavaScript array with another array, i.e. to emulate Python's extend method.
16 Answers
...
startActivityForResult() from a Fragment and finishing child Activity, doesn't call onActivityResult
...ly work as it worked for me too after a long research.
In AndroidManifest.xml file, make launchMode of FirstActivity.Java as singleTop.
<activity
android:name=".FirstActivity"
android:label="@string/title_activity_main"
android:launchMode="singleTop"
android:them...
Associative arrays in Shell scripts
...
Another non-bash 4 way.
#!/bin/bash
# A pretend Python dictionary with bash 3
ARRAY=( "cow:moo"
"dinosaur:roar"
"bird:chirp"
"bash:rock" )
for animal in "${ARRAY[@]}" ; do
KEY=${animal%%:*}
VALUE=${animal#*:}
printf "%s likes to %s.\n"...
When should I use @classmethod and when def method(self)?
...atic method of java or C++. ( static method is a general term I guess ;) )
Python also has @staticmethod. and difference between classmethod and staticmethod is whether you can
access to class or static variable using argument or classname itself.
class TestMethod(object):
cls_var = 1
@clas...
Pure JavaScript Send POST Data Without a Form
... data back from a POST request.
JS (put in static/hello.html to serve via Python):
<html><head><meta charset="utf-8"/></head><body>
Hello.
<script>
var xhr = new XMLHttpRequest();
xhr.open("POST", "/postman", true);
xhr.setRequestHeader('Content-Type', 'applic...
How to estimate how much memory a Pandas' DataFrame will need?
...a to the discussion.
I ran a series of tests on this issue.
By using the python resource package I got the memory usage of my process.
And by writing the csv into a StringIO buffer, I could easily measure the size of it in bytes.
I ran two experiments, each one creating 20 dataframes of increasi...
How can I generate a list of files with their absolute path in Linux?
...all files, or perhaps of all directories, or maybe I want a listing of all xml files, or all files changed in the last week. All that is possible with find, but not easily with ls.
– Matthew Scharley
Jul 8 '11 at 7:31
...
Combine two columns of text in pandas dataframe
I have a 20 x 4000 dataframe in Python using pandas. Two of these columns are named Year and quarter . I'd like to create a variable called period that makes Year = 2000 and quarter= q2 into 2000q2 .
...
How can I default a parameter to Guid.Empty in C#?
...od is called in PHP; but only creates one object for the entire program in Python. Really, I consider this to be one of the very few design flaws of Python. I'm somewhat glad C# (and VB.Net) avoided this issue by simply disallowing new objects in default parameters... though there are times where ...