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Android basics: running code in the UI thread
... time grabbing a thread out of the thread pool, to execute a default no-op doInBackground(), before eventually doing what amounts to a post(). This is by far the least efficient of the three. Use AsyncTask if you actually have work to do in a background thread, not just for the use of onPostExecute(...
Is “IF” expensive?
...m a function, virtual function calls, and function pointer calls.
So what does this all mean for performance? When the processor sees a branch instruction appear in its pipeline, it needs to figure out how to continue to fill up its pipeline. In order to figure out what instructions come after th...
Best way to check if a URL is valid
...that the function will only find ASCII URLs to be valid; internationalized domain names (containing non-ASCII characters) will fail.
Example:
if (filter_var($url, FILTER_VALIDATE_URL) === FALSE) {
die('Not a valid URL');
}
...
How can I copy the content of a branch to a new local branch?
...hed the changes to remote. I want to revert the changes on that branch and do something else on it, but I don't want to lose the work completely. I was thinking of something like create a new branch locally and copy the old branch there, then I can revert the changes and continue working on the old ...
Where is the list of predefined Maven properties
...
Do you mean this one?
https://web.archive.org/web/20150520200505/https://docs.codehaus.org/display/MAVENUSER/MavenPropertiesGuide
I also moved its content to a GitHub repo:
https://github.com/cko/predefined_maven_propertie...
How to show soft-keyboard when edittext is focused
...ically show the soft-keyboard when an EditText is focused (if the device does not have a physical keyboard) and I have two problems:
...
How to fix Hibernate LazyInitializationException: failed to lazily initialize a collection of roles,
...otation is at the dao level on a generic method you probably won't want to do that there so you will need to implement a service class in front of the dao which has the @Transactional boundaries from within which you can walk the desired child entities
– jcmwright80
...
How do I pass command-line arguments to a WinForms application?
...
@docesam That helped me a lot, thanks! Was wondering why it kept trying to load the program itself as text.
– Kaitlyn
Aug 29 '15 at 5:01
...
Lambda function in list comprehensions
...ne creates a single lambda function and calls it ten times.
The second one doesn't call the function. It creates 10 different lambda functions. It puts all of those in a list. To make it equivalent to the first you need:
[(lambda x: x*x)(x) for x in range(10)]
Or better yet:
[x*x for x in range(10)...
How to fix a locale setting warning from Perl?
...
Your OS doesn't know about en_US.UTF-8.
You didn't mention a specific platform, but I can reproduce your problem:
% uname -a
OSF1 hunter2 V5.1 2650 alpha
% perl -e exit
perl: warning: Setting locale failed.
perl: warning: Please ch...