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How can I count the number of matches for a regex?
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matcher.find() does not find all matches, only the next match.
Solution for Java 9+
long matches = matcher.results().count();
Solution for Java 8 and older
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count...
Override ActiveRecord attribute methods
An example of what I'm talking about:
4 Answers
4
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What does the X-SourceFiles header do?
Using a FileStreamResult in ASP.NET MVC 3, I get a response header like
1 Answer
1
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How to change int into int64?
Im trying to convert an integer into an integer64 in go but im having no luck. Anyone know an easy way to do this?
3 Answer...
What is ?= in Makefile
... indicates to set the KDIR variable only if it's not set/doesn't have a value.
For example:
KDIR ?= "foo"
KDIR ?= "bar"
test:
echo $(KDIR)
Would print "foo"
GNU manual: http://www.gnu.org/software/make/manual/html_node/Setting.html
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Delete element in a slice
How does this delete trick with the append function work?
6 Answers
6
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django - query filter on manytomany is empty
In Django is there a way to filter on a manytomany field being empty or null.
2 Answers
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Calling static generic methods
I have come across a curious situation involving static generic methods. This is the code:
1 Answer
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Python Flask Intentional Empty Response
Is there a way to return a response (from make_response() object or similar) with certain properties so that it doesn't render the page again and doesn't do anything else either. I am trying to run a code on the server without generating any output
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I don't remember my android debug.keystore password
How can i see my debug.keystore password?
I entered my password 3 or 4 month ago and now i don't remember.
4 Answers
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