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Check whether a string is not null and not empty
...d to str.isBlank() which will also test for other Unicode white spaces)
Wrapped in a handy function:
public static boolean empty( final String s ) {
// Null-safe, short-circuit evaluation.
return s == null || s.trim().isEmpty();
}
Becomes:
if( !empty( str ) )
...
How to replace a set of tokens in a Java String?
...using a matcher to continually find the expressions and replace them, then append the text to a string builder:
Pattern pattern = Pattern.compile("\\[(.+?)\\]");
Matcher matcher = pattern.matcher(text);
HashMap<String,String> replacements = new HashMap<String,String>();
//populate the r...
gem install: Failed to build gem native extension (can't find header files)
...
this worked when i had a problem trying to create an app using ruby on rails. it complained about how it can't install json and bundler can't continue. installing ruby-devel worked.
– Jack
Nov 4 '12 at 20:43
...
Android: How to change CheckBox size?
...placing your own custom image, make sure you replace every checkbox in the app (even if there is no size change) or else you may end up with a mix of styles on certain devices.
– DougW
Feb 6 '12 at 22:45
...
Should flux stores, or actions (or both) touch external services?
...h ways, and after having done both myself (initially going with the former approach), I believe that stores should be dumb recipients of data from the actions, and that asynchronous processing of writes should live in the action creators. (Async reads can be handled differently.) In my experience, t...
Where do I mark a lambda expression async?
...oking for? Browse other questions tagged c# lambda resharper windows-store-apps async-await or ask your own question.
bootstrap modal removes scroll bar
When I trigger a modal view in my page it triggers the scroll bar to disappear. It's an annoying effect because the background page starts moving when the modal moves in / disappears. Is there a cure for that effect?
...
How to Animate Addition or Removal of Android ListView Rows
...imation anim = AnimationUtils.loadAnimation(
GoTransitApp.this, android.R.anim.slide_out_right
);
anim.setDuration(500);
listView.getChildAt(index).startAnimation(anim );
new Handler().postDelayed(new Runnable() {
public void run() {
FavouritesMan...
MySQL offset infinite rows
... @amd I'm not saying that the developer should change the behavior of the app in order to avoid using 18446744073709551615. I'm saying that they should consider whether using that number makes sense as part of the implementation of whatever the client or interface designer has requested, and that i...
How to find out how many lines of code there are in an Xcode project?
...
it appears the .m and .mm tests are missing an * (edited: seems SO is not rendering those without a preceding slash) The above was not working for me until I added them as such: find . "(" -name "*.m" -or -name "*.mm" -or -name ...