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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
...throwing is a better or cleaner way to handle a situation like nonexistent file or null pointer, regardless of whether those situations are common, and without considering the performance cost.
– LarsH
Apr 19 '13 at 18:37
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How to set cursor position in EditText?
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is there any way to do this at the XML file?
– kike
Oct 17 '17 at 13:25
@kike I do...
How to get device make and model on iOS?
...import <sys/utsname.h> // import it in your header or implementation file.
NSString* deviceName()
{
struct utsname systemInfo;
uname(&systemInfo);
return [NSString stringWithCString:systemInfo.machine
encoding:NSUTF8String...
Saving images in Python at a very high quality
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plt.savefig('destination_path.eps', format='eps')
I have found that eps files work best and the dpi parameter is what really makes them look good in a document.
UPDATE:
To specify the orientation of the figure before saving simply call the following before the plt.savefig call, but after creati...
How can I remove a button or make it invisible in Android?
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First make the button invisible in xml file.Then set button visible in java code if needed.
Button resetButton=(Button)findViewById(R.id.my_button_del);
resetButton.setVisibility(View.VISIBLE); //To set visible
Xml:
<Button
android:text="Delete"
android:id=...
What Ruby IDE do you prefer? [closed]
...-closing, symbol lists, code navigation, directory tree, multi-tabbed open files etc.) but also normal IDE features such as simple project management, compile-build-run within the main window. Unlike TextMate, it has a Terminal screen within its own window; you do not have to go back and force betwe...
How do I use Django templates without the rest of Django?
...ing a Django-based web site. How do I use it without having a settings.py file (and others) and having to set the DJANGO_SETTINGS_MODULE environment variable?
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What is “above-the-fold content” in Google Pagespeed?
...about these crucial components is to minify them and merge them into fewer files, to reduce render blocking. This comment is support for CowboyWillie comment which is unfairly downvoted.
– Tahi Reu
Jun 25 '19 at 8:22
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What is the difference between synchronous and asynchronous programming (in node.js)
...ingle threaded, there are some task that can run in parallel. For example, File System operations occur in a different process.
That's why Node can do async operations: one thread is doing file system operations, while the main Node thread keeps executing your javascript code. In an event-driven ...
Checking Bash exit status of several commands efficiently
...If you invoke ls foo and get an error message of the form ls: foo: No such file or directory\n you understand the problem. If instead you get ls: foo: No such file or directory\nerror with ls\n you become distracted by superfluous information. In this case, It is easy enough to argue that the supe...