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Using 'return' in a Ruby block
...ntext:
$ irb
irb(main):001:0> def thing(*args, &block)
irb(main):002:1> value = block.call
irb(main):003:1> puts "value=#{value}"
irb(main):004:1> end
=> nil
irb(main):005:0>
irb(main):006:0* thing {
irb(main):007:1* return 6 * 7
irb(main):008:1> }
LocalJumpError: une...
How to access the ith column of a NumPy multidimensional array?
...
724
>>> test[:,0]
array([1, 3, 5])
Similarly,
>>> test[1,:]
array([3, 4])
l...
How to URL encode a string in Ruby
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str = "\x12\x34\x56\x78\x9a\xbc\xde\xf1\x23\x45\x67\x89\xab\xcd\xef\x12\x34\x56\x78\x9a".force_encoding('ASCII-8BIT')
puts CGI.escape str
=> "%124Vx%9A%BC%DE%F1%23Eg%89%AB%CD%EF%124Vx%9A"
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print call stack in C or C++
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answered Oct 10 '10 at 10:25
Idan KIdan K
19k88 gold badges5858 silver badges8181 bronze badges
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How to find out what type of a Mat object is with Mat::type() in OpenCV
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201
Here is a handy function you can use to help with identifying your opencv matrices at runtime....
What is a good regular expression to match a URL? [duplicate]
...e URL starts with HTTP/HTTPS:
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
If you do not require HTTP protocol:
[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
To try this out see http://regexr....
VBoxManage: error: Failed to create the host-only adapter
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32 Answers
32
Active
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What difference does .AsNoTracking() make?
... Jess
18.9k1515 gold badges101101 silver badges128128 bronze badges
answered Aug 31 '12 at 8:39
Ladislav MrnkaLadislav Mrnka
3...
How can I debug git/git-shell related problems?
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217
For even more verbose output use following:
GIT_CURL_VERBOSE=1 GIT_TRACE=1 git pull origin ma...
How can I join elements of an array in Bash?
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edited Sep 4 at 21:18
answered Jul 24 '13 at 18:07
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