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What exactly does += do in python?
... that simple. I also would appreciate links to definitions of other short hand tools in python.
14 Answers
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How to make a valid Windows filename from an arbitrary string?
...gBuilder instead of a simple string; the original version will take longer and consume more memory.
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How can you get the Manifest Version number from the App's (Layout) XML variables?
...ds that could be done.
The version could be stored in a resource string, and placed into the manifest by:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.somepackage"
android:versionName="@string/version" android:versionCode="20">
One could creat...
Creating range in JavaScript - strange syntax
...cks.
4. How Number treats input
Doing Number(something) (section 15.7.1) converts something to a number, and that is all. How it does that is a bit convoluted, especially in the cases of strings, but the operation is defined in section 9.3 in case you're interested.
5. Games of Function.prototype...
Java executors: how to be notified, without blocking, when a task completes?
... of the task.
You could even write a general wrapper for Runnable tasks, and submit these to ExecutorService. Or, see below for a mechanism built into Java 8.
class CallbackTask implements Runnable {
private final Runnable task;
private final Callback callback;
CallbackTask(Runnable task...
How do I “undo” a --single-branch clone?
...e = refs/heads/master
rebase = true
I compared this to a full clone, and saw that the only difference was the "fetch" under [remote "origin"].
Note: I'm running Git version 1.8.2. The config options may have changed if you're running an older version of Git. If my commands don't work, then I'...
Repository Pattern vs DAL
...the same thing? Just finished to watch Rob Connery's Storefront tutorial and they seem to be similar techinques. I mean, when I implement a DAL object I have the GetStuff, Add/Delete etc methods and I always write the interface first so that I can switch db later.
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How to create function that returns nothing
...ite a function with pl/pgsql .
I'm using PostgresEnterprise Manager v3 and using shell to make a function, but in the shell I must define return type. If I don't define the return type, I'm not able to create a function.
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How do I hide a menu item in the actionbar?
...Item pointing to such item, call setVisible on it to adjust its visibility and then call invalidateOptionsMenu() on your activity so the ActionBar menu is adjusted accordingly.
Update: A MenuItem is not a regular view that's part of your layout. Its something special, completely different. Your cod...
Why do we need Abstract factory design pattern?
...tract Factory has been accepted as the solution.
To the best of my understanding, these questions represent real concerns or problems that people had, so that should get you started with some real-life examples:
Is there a pattern for initializing objects created via a DI container
Can't combine ...