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How to set custom header in Volley Request
How can custom headers be set for a Volley request? At the moment, there is way to set body content for a POST request. I've a simple GET request, but I need to pass the custom headers alongwith. I don't see how JsonRequest class supports it. Is it possible at all?
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Difference between String replace() and replaceAll()
...g 's replace() and replaceAll() methods,
other than later uses regex? For simple substitutions like, replace . with / ,
is there any difference?
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Loop backwards using indices in Python?
...ou put -1 then the range stops at 0, if you put -5, the range stops at -4 (for an increment of -1)
– mulllhausen
Jul 20 '14 at 14:01
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Python - abs vs fabs
I noticed that in python there are two similar looking methods for finding the absolute value of a number:
4 Answers
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String concatenation: concat() vs “+” operator
...ill silently convert the argument to a String (using the toString() method for objects). So the concat() method is more strict in what it accepts.
To look under the hood, write a simple class with a += b;
public class Concat {
String cat(String a, String b) {
a += b;
return a;
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How do I remove all .pyc files from a project?
... It's worth noting that pyclean appears to only delete .pyc files for which there is a corresponding .py file (at least on my system - ubuntu 12.10.) This means it's not very helpful in situations where a source file has been deleted and you want to clean up the leftover .pyc files.
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How to add a WiX custom action that happens only on uninstall (via MSI)?
... the answer currently immediately below.
This topic has been a headache for long time. I finally figured it out.
There are some solutions online, but none of them really works. And of course there is no documentation.
So in the chart below there are several properties that are suggested to use an...
How to import module when module name has a '-' dash or hyphen in it?
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I would never implement this. But I can't not give +1 for the sheer brilliance of this hack
– inspectorG4dget
Dec 2 '11 at 2:25
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Forced naming of parameters in Python
... may only be passed used keyword arguments.
>>> def foo(pos, *, forcenamed):
... print(pos, forcenamed)
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>>> foo(pos=10, forcenamed=20)
10 20
>>> foo(10, forcenamed=20)
10 20
>>> foo(10, 20)
Traceback (most recent call last):
File "<stdin>", line 1...
What is “android.R.layout.simple_list_item_1”?
.../R.layout.html
(Updated link thanks @Estel: https://github.com/android/platform_frameworks_base/tree/master/core/res/res/layout )
You can actually view the code for the layouts.
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