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bash assign default value
...age of the A=$A:-hello approach is that its self-documenting when run with set -x. That is, the assignment will print as A=hello whereas the null command would only print the value (hello).
– lmsurprenant
Feb 11 '19 at 23:01
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Save ArrayList to SharedPreferences
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After API 11 the SharedPreferences Editor accepts Sets. You could convert your List into a HashSet or something similar and store it like that. When you read it back, convert it into an ArrayList, sort it if needed and you're good to go.
//Retrieve the values
Set<String&g...
How to make PyCharm always show line numbers
I cannot seem to be able to find the setting to enable line numbers for all files, but I have to always right click and enable this on per file basis.
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Failed to import new Gradle project: failed to find Build Tools revision *.0.0
...using Android Studio:
Open Android Studio
From the top, choose File > Settings > Appearance & Behavior > System Settings > Android SDK
click on the tab SDK Tools at the top. Then highlight Android SDK Build Tools from the list.
Check "Show Package Details" check box, choose the bui...
How to set the title of UIButton as left alignment?
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Set the contentHorizontalAlignment:
emailBtn.contentHorizontalAlignment = .left;
You might also want to adjust the content left inset otherwise the text will touch the left border:
emailBtn.contentEdgeInsets = UIEdgeInset...
How can I check if the current date/time is past a set date/time?
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Check PHP's strtotime-function to convert your set date/time to a timestamp: http://php.net/manual/en/function.strtotime.php
If strtotime can't handle your date/time format correctly ("4:00PM" will probably work but not "at 4PM"), you'll need to use string-functions, e.g...
How do I create a basic UIButton programmatically?
...e UIButton s will be created dynamically and its layout or properties are set.
34 Answers
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Get dimension from XML and set text size in runtime
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<dimen name="text_medium">18sp</dimen>
Set the size in code:
textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, getResources().getDimension(R.dimen.text_medium));
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Changing Vim indentation behavior by file type
...xample, I have a file ~/.vim/after/ftplugin/html.vim with this contents:
setlocal shiftwidth=2
setlocal tabstop=2
Which causes vim to use tabs with a width of 2 characters for indenting (the noexpandtab option is set globally elsewhere in my configuration).
This is described here: http://vimdoc...
log all queries that mongoose fire in the application
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You can enable debug mode like so:
mongoose.set('debug', true);
or add your own debug callback:
mongoose.set('debug', function (coll, method, query, doc [, options]) {
//do your thing
});
This will log all executed collection methods and their arguments to the co...