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Regex group capture in R with multiple capture-groups
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str_match(), from the stringr package, will do this. It returns a character matrix with one column for each group in the match (and one for the whole match):
> s = c("(sometext :: 0.1231313213)", "(moretext :: 0.111222)")
> str_match(s, "\\...
Convert Python dict into a dataframe
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The error here, is since calling the DataFrame constructor with scalar values (where it expects values to be a list/dict/... i.e. have multiple columns):
pd.DataFrame(d)
ValueError: If using all scalar values, you must must pass an index
You could ...
Static methods - How to call a method from another method?
... here: It is clear that classmethods have no drawbacks over staticmethods, and classmethods allows the method to be extended in the future to call other class methods. Thus it should always be preferred, even though there is no immediate need.
– u0b34a0f6ae
Dec...
How do I make my string comparison case insensitive?
I created a Java program to compare two strings:
12 Answers
12
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OS X Bash, 'watch' command
I'm looking for the best way to duplicate the Linux 'watch' command on Mac OS X. I'd like to run a command every few seconds to pattern match on the contents of an output file using 'tail' and 'sed'.
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How to truncate string using SQL server
i have large string in SQL Server. I want to truncate that string to 10 or 15 character
6 Answers
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What is Type-safe?
... variable.
Some simple examples:
// Fails, Trying to put an integer in a string
String one = 1;
// Also fails.
int foo = "bar";
This also applies to method arguments, since you are passing explicit types to them:
int AddTwoNumbers(int a, int b)
{
return a + b;
}
If I tried to call that us...
Accessing MP3 metadata with Python [closed]
... ID3 tag which the other modules I looked at couldn't. You'll have to install using pip or download the tar and execute python setup.py install from the source folder.
Relevant examples from the website are below.
Reading the contents of an mp3 file containing either v1 or v2 tag info:
import...
How to make a new List in Java
...eate a list that has things in it (though it will be fixed size):
List<String> messages = Arrays.asList("Hello", "World!", "How", "Are", "You");
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How to initialize static variables
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I love PHP, but it's really odd sometimes.
– Marco Demaio
Nov 10 '11 at 21:46
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