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How to get arguments with flags in Bash
... show brief help"
echo "-a, --action=ACTION specify an action to use"
echo "-o, --output-dir=DIR specify a directory to store output in"
exit 0
;;
-a)
shift
if test $# -gt 0; then
export PROCESS=$1
else
echo "no ...
Pythonic way to create a long multi-line string
... quotes to start and end them.
s = """ this is a very
long string if I had the
energy to type more and more ..."""
You can use single quotes too (3 of them of course at start and end) and treat the resulting string s just like any other string.
NOTE: Just as with any string, anyt...
When to use f:viewAction / preRenderView versus PostConstruct?
...o use one or the other based on the type of scope of the backing bean e.g. If the backing bean is @RequestScoped , then would the choice of using f:viewAction or preRenderView over @PostConstruct to initialize your backing bean prior to rendering the view be irrelevant as the two would result...
When to create a new app (with startapp) in Django?
...
Does that mean, if I make a child model, it must always be in the same app? Since I can't easily drop it into another project without bringing over two "apps"
– Lionel
Feb 10 '11 at 5:22
...
Synthetic Class in Java
...ou have a switch statement, java creates a variable that starts with a $. If you want to see an example of this, peek into the java reflection of a class that has a switch statement in it. You will see these variables when you have at least one switch statement anywhere in the class.
To answer y...
When should I use a List vs a LinkedList
... = 0;
foreach (var item in list)
sum += item.A;
Even if you only access data essentially it is much slower!! I say never use a linkedList.
Here is another comparison performing a lot of inserts (we plan on inserting an item at the middle of the list)
Linked List (51 se...
How to pass objects to functions in C++?
...
@RC Still doesn't tell you if the pointer is const or not. Google's guidelines have come in for a lot of flak in the various C++ online communities - justifiably so, IMHO.
– anon
Jan 26 '10 at 12:48
...
Multi-line tooltips in Java?
...
If you wrap the tooltip in <html> and </html> tags, you can break lines with <br> tags. See http://www.jguru.com/faq/view.jsp?EID=10653 for examples and discussion.
Or you can use the JMultiLineToolTip c...
How to catch an Exception from a thread
...
What can I do, if I want to throw the exception to an upper level?
– rodi
Feb 25 '15 at 11:25
6
...
jQuery: Wait/Delay 1 second without executing code
...orms the check every second using setTimeout:
var check = function(){
if(condition){
// run when condition is met
}
else {
setTimeout(check, 1000); // check again in a second
}
}
check();
s...