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What is the difference between declarative and procedural programming paradigms?
...ou want (a paragraph with this bit in bold), rather than writing out "draw string, measure string, advance position, etc." Another example is Prolog, where a "program" is a declarative set of facts and relations/deductions, and a query. The Prolog engine figures out how to evaluate the query: you ...
Why extend the Android Application class?
...his:
MyApplication mApplication = (MyApplication)getApplicationContext();
String username = mApplication.getUsername();
String password = mApplication.getPassword();
And finally, do remember to use the Application object as a singleton object:
public class MyApplication extends Application {
...
How to get the directory of the currently running file?
...e recommended way of doing this is with os.Executable:
func Executable() (string, error)
Executable returns the path name for the executable that started the current process. There is no guarantee that the path is still pointing to the correct executable. If a symlink was used to start the process,...
Git commit with no commit message
...s unexpected and unnecessary.
Instead of using the length of the message string for checking if the user specified one, directly remember if the option -m was given.
git 2.9 (June 2016) improves the empty message behavior:
See commit 178e814 (06 Apr 2016) by Adam Dinwoodie (me-and).
See commi...
Bad value X-UA-Compatible for attribute http-equiv on element meta
...-equiv.attrs.http-equiv.X-UA-Compatible = attribute http-equiv {
xsd:string {
pattern = "X-UA-Compatible"
}
}
meta.http-equiv.attrs.content.X-UA-Compatible = attribute content {
xsd:string {
pattern = "IE=((edge)|(EmulateIE(7|8|9|10))|7|8|9|10|11)(,chrome=(1...
How do I write the 'cd' command in a makefile?
...you add a backslash and a newline. This is due to the fact that the entire string is parsed as a single line by the shell. As noted in the comments, you should use '&&' to join commands, which mean they only get executed if the preceding command was successful.
all:
cd some_dir &...
How can I push a specific commit to a remote, and not previous commits?
... push <remotename> <commit SHA>:<remotebranchname>
provided <remotebranchname> already exists on the remote. (If it doesn't, you can use git push <remotename> <commit SHA>:refs/heads/<remotebranchname> to autocreate it.)
If you want to push a commit with...
iPhone: How to switch tabs with an animation?
...aints, before ... a lot of stuff! So please take this into account when deciding whether to use these techniques. There may be more modern approaches. Oh, and if you find one. Please add a response so everyone can see. Thanks.
Some time later ...
After much research I came up with two working sol...
Why is it not possible to extend annotations in Java?
...is:
@Target(ElementType.ANNOTATION_TYPE)
public @interface Category {
String category();
}
@Category(category="validator")
public @interface MyFooBarValidator {
}
As you can see, you can easily group and categorize annotations without undue pain using the provided facilities.
So, KISS is...
Prevent ViewPager from destroying off-screen views
...t one is not destroyed, and vice-versa.
mViewPager = (ViewPager)findViewById(R.id.pager);
mViewPager.setOffscreenPageLimit(2);
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