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Can one AngularJS controller call another?
...rvice)
{
// has a reference to the same instance of the service
// so if the service updates state for example, this controller knows about it
}
Another way is emitting an event on scope:
function FirstController($scope)
{
$scope.$on('someEvent', function(event, args) {});
// another co...
How do I use shell variables in an awk script?
...everal ways. Some are better than others. This should cover most of them. If you have a comment, please leave below. v1.5
Using ...
Flatten an irregular list of lists
...boost the performance.
Python 2
def flatten(l):
for el in l:
if isinstance(el, collections.Iterable) and not isinstance(el, basestring):
for sub in flatten(el):
yield sub
else:
yield el
I used the Iterable ABC added in 2.6.
Python 3
I...
How to use protractor to check if an element is visible?
I'm trying to test if an element is visible using protractor. Here's what the element looks like:
8 Answers
...
Running bash script from within python
...
The shell=True parameter is not needed (under a Posix system like Linux) if the first line of the bash script is a path to a shell; for example, #!/bin/bash.
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Android: How can I get the current foreground activity (from a service)?
...e activity, with a low-priority BroadcastReceiver as backup (to raise a Notification if the activity is not on-screen) -- here is a blog post with more on this pattern
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How can I lock a file using java (if possible)
...an I prevent another (Java) process from opening this file, or at least notify that second process that the file is already opened? Does this automatically make the second process get an exception if the file is open (which solves my problem) or do I have to explicitly open it in the first process w...
Difference between maven scope compile and provided for JAR packaging
What is the difference between the maven scope compile and provided when artifact is built as a JAR? If it was WAR, I'd understand - the artifact would be included or not in WEB-INF/lib. But in case of a JAR it doesn't matter - dependencies aren't included. They have to be on classpath when thei...
Bash ignoring error for a particular command
...e Manual explains, "The shell does not exit" when the -e attribute is set "if the command that fails is part of the command list immediately following a while or until keyword, part of the test in an if statement, part of any command executed in a && or || list except the command following t...
Do I need to create indexes on foreign keys on Oracle?
...rom a query performance perspective to create a separate index on A.B_ID.
If you ever delete rows in B, you definitely want A.B_ID to be indexed. Otherwise, Oracle will have to do a full table scan on A every time you delete a row from B to make sure that there are no orphaned records (depending o...