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Xcode 'Build and Archive' menu item disabled

... All you need to do is create an Executable File in your project folder... If you start with a fresh project there are NO executable projects, only what you create, be it a .cpp or a .m you need an executable in the folder. ...
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How can I use UUIDs in SQLAlchemy?

... dialect supports UUID columns. This is easy (and the question is specifically postgres) -- I don't understand why the other answers are all so complicated. Here is an example: from sqlalchemy.dialects.postgresql import UUID from flask_sqlalchemy import SQLAlchemy import uuid db = SQLAlchemy() ...
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iOS 7 style Blur view

...bove, I recently reworked the blurs in GPUImage to support variable radii, allowing for the complete replication of the blur size in iOS 7's control center view. From that, I created the GPUImageiOS7BlurFilter class that encapsulates the proper blur size and color correction that Apple appears to be...
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Adding gif image in an ImageView in android

...imationActivity: - public class AnimationActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); InputStream stream = null; try { stream = getAssets().open("pig...
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Ways to implement data versioning in MongoDB

... approach would be to store diffs. Because the display of these diffs is really a special action, I would put the diffs in a different "history" collection. I would use the different collection to save memory space. You generally don't want a full history for a simple query. So by keeping the histo...
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Not receiving Google OAuth refresh token

... You need access_type=offline in all cases when you want the refresh_token. – DanH Jan 16 '13 at 3:07 ...
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Where do the Python unit tests go?

... For a file module.py, the unit test should normally be called test_module.py, following Pythonic naming conventions. There are several commonly accepted places to put test_module.py: In the same directory as module.py. In ../tests/test_module.py (at the same level as t...
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Is there a TRY CATCH command in Bash

... writing a shell script and need to check that a terminal app has been installed. I want to use a TRY/CATCH command to do this unless there is a neater way. ...
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Animate text change in UILabel

...seems that you have to specify the fade at each change. So - provided you call the transition each time, this works fine in my test on iOS9. – Confused Vorlon Nov 7 '15 at 23:50 ...
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How to get default gateway in Mac OSX

...sult thus looks like this: 192.168.195.1 In this case, netstat displays all result, grep only selects the line with 'default' in it, and awk further matches the pattern to display the second column in the text. You can similarly use route -n get default command to get the required result. The fu...