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Fastest way to check if a string matches a regexp in ruby?
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Starting with Ruby 2.4.0, you may use RegExp#match?:
pattern.match?(string)
Regexp#match? is explicitly listed as a performance enhancement in the release notes for 2.4.0, as it avoids object allocations performed by other methods s...
Running Python code in Vim
I am writing Python code using Vim, and every time I want to run my code, I type this inside Vim:
20 Answers
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What is attr_accessor in Ruby?
... two different methods. The former is called reader and latter is called writer. We didn't create the writer yet so let's do that.
class Person
def name
@name
end
def name=(str)
@name = str
end
end
person = Person.new
person.name = 'Dennis'
person.name # => "Dennis"
Awesome. ...
How to get an enum value from a string value in Java?
...n source code. They do appear in Javadoc, though; for example, Dialog.ModalityType shows both methods.
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How to keep index when using pandas merge
... 4 NaN
Note that for some left merge operations, you may end up with more rows than in a when there are multiple matches between a and b. In this case, you may need to drop duplicates.
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Escape angle brackets in a Windows command prompt
.... Basically what I want to do is the following:
echo some string < with angle > brackets >>myfile.txt
6 Ans...
How is Racket different from Scheme?
...ket is a descendant of Scheme. How is Racket different than R6RS? What did it add, or take away, or is just different?
6 An...
Padding is invalid and cannot be removed?
...lation to my program but can't seem to find a solution or the reason why it's happening to my specific program. I have been using the example provided my msdn for encrypting and decrypting an XmlDocument using the Rijndael algorithm. The encryption works fine but when I try to decrypt, I get the f...
Why doesn't String switch statement support a null case?
I am just wondering why the Java 7 switch statement does not support a null case and instead throws NullPointerException ? See the commented line below (example taken from the Java Tutorials article on switch ):
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TortoiseSVN icons not showing up under Windows 7
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Windows can only show a limited number of Overlay Icons (15 total, 11 after what Windows uses). Programs like Office Groove, Dropbox, Mozy, Carbonite, etc, will hijack a bunch of the 11 possible overlay icons (boy would it be nice if Microsoft upped t...