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How to force an entire layout View refresh?
...e().
ViewGroup vg = findViewById (R.id.mainLayout);
vg.invalidate();
Now, when the Activity resumes, it makes every View to draw itself. No call to invalidate() should be needed. To apply the theme, make sure you do it before any View is drawn, i.e., before setContentView(R.layout.mainscreen);...
How to check type of files without extensions in python?
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With newer subprocess library, you can now use the following code (*nix only solution):
import subprocess
import shlex
filename = 'your_file'
cmd = shlex.split('file --mime-type {0}'.format(filename))
result = subprocess.check_output(cmd)
mime_type = result.spli...
Removing an element from an Array (Java) [duplicate]
...y bad programming.
Suppose you had an array taking up, say, 100mb of ram. Now you want to iterate over it and delete 20 elements.
Give it a try...
I know you ASSUME that it's not going to be that big, or that if you were deleting that many at once you'd code it differently, but I've fixed an a...
Why does a RegExp with global flag give wrong results?
...oo Bar'));
re.lastIndex = 0;
result.push(re.test('Foo Bar'));
// result is now [true, true]
Having said that it may be more readable to create a new RegExp object each time (overhead is minimal as the RegExp is cached anyway):
result.push((/Foo B/gi).test(stringA));
result.push((/Foo B/gi).test(s...
sqlite3-ruby install error on Ubuntu
...e3 and libsqlite3-dev
sudo apt-get install sqlite3
libsqlite3-dev
-Now,install sqlite gem
[sudo] gem install sqlite3-ruby
-using Ubuntu doesn't need sudo.
Goodluck! Note: i'm using Ubuntu 10.10 and it's working.
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How to change credentials for SVN repository in Eclipse?
...added an SVN repository with his credentials and selected 'Save password'. Now every time I do anything with SVN his cached credentials are used. How can I change them to mine?
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How do I use a PriorityQueue?
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@Neil Yes, I have made it more explicit in the answer now :)
– akhil_mittal
Apr 29 '19 at 5:50
1
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Is there a Java equivalent or methodology for the typedef keyword in C++?
...und, I found judicious use of typedef to be incredibly helpful. Do you know of a way to achieve similar functionality in Java, whether that be a Java mechanism, pattern, or some other effective way you have used?
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How to access java-classes in the default-package?
I'm working now together with others in a grails project. I have to write some Java-classes. But I need access to an searchable object created with groovy. It seems, that this object has to be placed in the default-package.
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How do you list the primary key of a SQL Server table?
Simple question, how do you list the primary key of a table with T-SQL? I know how to get indexes on a table, but can't remember how to get the PK.
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