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Does Ruby regular expression have a not match operator like “!~” in Perl?
...bar/)
needs_bar = !input.match?(/bar/)
That said, I think it would be spiffy if there was a .no_match? method.
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Difference between java.exe and javaw.exe
...hat some applications are running on javaw (not in java ). What is the difference between them and how can I run my Swing application on javaw ?
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Can we set a Git default to fetch all tags during a remote pull?
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The --force option is useful for refreshing the local tags. Mainly if you have floating tags:
git fetch --tags --force
The git pull option has also the --force options, and the description is the same:
When git fetch is used with <rbranch>:<lbranch> refspec, it refuses to
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Add string in a certain position in Python
... = hash[:4] + '-' + hash[4:]
>>> print hash
3558-79ACB6
However if you like something like a function do as this:
def insert_dash(string, index):
return string[:index] + '-' + string[index:]
print insert_dash("355879ACB6", 5)
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What is the purpose of python's inner classes?
...es confuse me. Is there something that can't be accomplished without them? If so, what is that thing?
9 Answers
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Function to convert column number to letter?
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You can add the (0) to the end of the Split command if you want to save yourself a variable declaration and extra line of code. eg Col_letter = Split(Cells(1, lngCol).Address(True, False), "$")(0)
– Caltor
Feb 18 '15 at 12:21
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Reload an iframe with jQuery
I have two iframes on a page and one makes changes to the other but the other iframe doesn't show the change until I refresh. Is there an easy way to refresh this iframe with jQuery?
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Automating “enter” keypresses for bash script generating ssh keys
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Agree with Michel Marro except that it needs some more:
If the file already exists, it will still be interactive asking if it has to overwrite it.
Use the answer of this question.
yes y | ssh-keygen -q -t rsa -N '' >/dev/null
The redirection to null is necessary to silence ...
How to run Ruby code from terminal?
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If Ruby is installed, then
ruby yourfile.rb
where yourfile.rb is the file containing the ruby code.
Or
irb
to start the interactive Ruby environment, where you can type lines of code and see the results immediately.
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Ruby custom error classes: inheritance of the message attribute
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FYI, if the first argument, object, is an option and raise MyCustomError, "a message" without new, "a message" will not be set.
– hiroshi
Jun 12 '15 at 2:06
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