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How to use `subprocess` command with pipes
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note: if grep dies prematurely; ps may hang indefinitely if it produces enough output to fill its OS pipe buffer (because you haven't called ps.stdout.close() in the parent). Swap the starting order, to avoid it
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“From View Controller” disappears using UIViewControllerContextTransitioning
...presentation controller, the presentation controller will most likely not know how to layout that view controller's view when needed for example when the orientation changes, but the original owner of the presenting view controller does.
In iOS 8 viewForKey: method was introduced to get views that ...
Why is the Android emulator so slow? How can we speed up the Android emulator? [closed]
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Update
You can now enable the Quick Boot option for Android Emulator. That will save emulator state, and it will start the emulator quickly on the next boot.
Click on Emulator edit button, then click Show Advanced Setting. Then enable Quic...
What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
What is meant by String Pool ? And what is the difference between the following declarations:
5 Answers
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How to check if an email address exists without sending an email?
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There are two methods you can sometimes use to determine if a recipient actually exists:
You can connect to the server, and issue a VRFY command. Very few servers support this command, but it is intended for exactly this. If the server responds with a 2.0.0 DSN, the user exists.
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filtering NSArray into a new NSArray in Objective-C
...ontains[c] 's'"];
[array filteredArrayUsingPredicate:sPredicate];
// array now contains { @"Chris", @"Melissa" }
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Multiline bash commands in makefile
...omfortable way to compile my project via a few lines of bash commands. But now I need to compile it via makefile. Considering, that every command is run in its own shell, my question is what is the best way to run multi-line bash command, depended on each other, in makefile?
For example, like this...
JSONDecodeError: Expecting value: line 1 column 1 (char 0)
...ncoded data natively.
pycurl has a very archaic API. Unless you have a specific requirement for using it, there are better choices.
requests offers the most friendly API, including JSON support. If you can, replace your call with:
import requests
return requests.get(url).json()
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C++ templates that accept only certain types
...would only match myBaseType exactly. Before dismissing Boost, you should know that most of it is header-only template code -- so there's no memory or time cost at runtime for things you don't use. Also the particular things you'd be using here (BOOST_STATIC_ASSERT() and is_base_of<>) can be ...
Get img thumbnails from Vimeo?
...Vimeo Simple API docs:
Making a Video Request
To get data about a specific video,
use the following url:
http://vimeo.com/api/v2/video/video_id.output
video_id The ID of the video you want information for.
output Specify the
output type. We currently offer JSON,
PHP, and X...