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Getting pids from ps -ef |grep keyword
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234
You can use pgrep as long as you include the -f options. That makes pgrep match keywords in th...
How to find a min/max with Ruby
... so anything that includes Enumerable will have those methods available.
v2.4 introduces own Array#min and Array#max, which are way faster than Enumerable's methods because they skip calling #each.
@nicholasklick mentions another option, Enumerable#minmax, but this time returning an array of [min,...
cannot load such file — zlib even after using rvm pkg install zlib
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I ended up installing zlib from apt-get and then reinstalling ruby to not use the rvm director...
How to use a variable for the key part of a map
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2 Answers
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How to use the 'sweep' function
...ation defined by FUN.
For instance, if you want to add 1 to the 1st row, 2 to the 2nd, etc. of the matrix you defined, you will do:
sweep (M, 1, c(1: 4), "+")
I frankly did not understand the definition in the R documentation either, I just learned by looking up examples.
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Name of this month (Date.today.month as name)
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edited Jan 23 '15 at 23:15
answered Jan 30 '11 at 17:18
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invalid multibyte char (US-ASCII) with Rails and Ruby 1.9
I'm using Ruby 1.9.1 with Rails 2.3.4 My application is to handle text input
6 Answers
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What does value & 0xff do in Java?
... a long. But not on byte. See the Java Language Specification, sections 15.22.1 and 5.6.2.
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Why is '+' not understood by Python sets?
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102
Python sets don't have an implementation for the + operator.
You can use | for set union and &a...
How do I use Nant/Ant naming patterns?
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The rules are:
a single star (*) matches zero or more characters within a path name
a double...