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Search and replace in bash using regular expressions
...occurrences in the input.
You can also pick your favorite tool using this method, i.e. perl, awk, e.g.:
echo "$MYVAR" | perl -pe 's/[a-zA-Z]/X/g and s/[0-9]/N/g'
This may allow you to do more creative matches... For example, in the snip above, the numeric replacement would not be used unless th...
django test app error - Got an error creating the test database: permission denied to create databas
...es a new database, in your case test_finance. The postgres user with username django does not have permission to create a database, hence the error message.
When you run migrate or syncdb, Django does not try to create the finance database, so you don't get any errors.
You can add the createdb per...
Check play state of AVPlayer
... addObserver:<self>
selector:@selector(<#The selector name#>)
name:AVPlayerItemDidPlayToEndTimeNotification
object:<#A player item#>];
And to track playing you can:
"track changes in the position of the playhead in an AVPlayer object" by using addPeriodicT...
Is there a tool to convert JavaScript files to TypeScript [closed]
Now TypeScript came out, it is an exciting news for me, but how can I convert all the existing JavaScript files to TypeScript.
...
What Git branching models work for you?
... like advice on what branching models work best for your company or development process.
4 Answers
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Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
...ions, destructive and constructive.
While constructive function, as the name implies, constructs something, a destructive one destroys something, but not in the way you may think now.
For example, the function
Function<Integer,Integer> f = (x,y) -> x + y
is a constructive one.
As y...
Read password from stdin
...o: An interactive CLI Python program, that is in need for a password. That means also, there's no GUI solution possible.
2 ...
Where is Developer Command Prompt for VS2013?
...
From VS2013 Menu Select "Tools", then Select "External Tools". Enter as below:
Title: "VS2013 Native Tools-Command Prompt" would be good
Command: C:\Windows\System32\cmd.exe
Arguments: /k "C:\Program Files (x86)\Microsoft Visual Studio...
SQL “select where not in subquery” returns no results
Disclaimer: I have figured out the problem (I think), but I wanted to add this issue to Stack Overflow since I couldn't (easily) find it anywhere. Also, someone might have a better answer than I do.
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'AND' vs '&&' as operator
...
If you use AND and OR, you'll eventually get tripped up by something like this:
$this_one = true;
$that = false;
$truthiness = $this_one and $that;
Want to guess what $truthiness equals?
If you said false... bzzzt, sorry, wrong!
$truthiness above has the value true. Why? = has ...