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Scala list concatenation, ::: vs ++
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325
Legacy. List was originally defined to be functional-languages-looking:
1 :: 2 :: Nil // a lis...
Installing specific package versions with pip
I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it:
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Does Ruby regular expression have a not match operator like “!~” in Perl?
...theless, it works:
irb(main):001:0> 'x' !~ /x/
=> false
irb(main):002:0> 'x' !~ /y/
=> true
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How to set a Timer in Java?
How to set a Timer, say for 2 minutes, to try to connect to a Database then throw exception if there is any issue in connection?
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Creating Multifield Indexes in Mongoose / MongoDB
...For your case it would be something like:
mySchema.index({field1: 1, field2: 1}, {unique: true});
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Add a new element to an array without specifying the index in Bash
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edited Dec 23 '09 at 9:18
answered Dec 23 '09 at 9:02
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What's the (hidden) cost of Scala's lazy val?
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edited Feb 20 '14 at 20:33
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How can I match a string with a regex in Bash?
...ite a bash script that contains a function so when given a .tar , .tar.bz2 , .tar.gz etc. file it uses tar with the relevant switches to decompress the file.
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Logging framework incompatibility
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You are mixing the 1.5.6 version of the jcl bridge with the 1.6.0 version of the slf4j-api; this...
What does the “|” (single pipe) do in JavaScript?
... @MaBi: You should however know that the value is converted to a 32-bit integer, so it won't work properly for larger numbers.
– Guffa
May 5 '15 at 17:51
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