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How do I get elapsed time in milliseconds in Ruby?
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yes, but giving just "Time.now" is inaccurate and does not answer the question precisely.
– LowFieldTheory
Nov 8 '19 at 14:46
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Unix - create path of folders and file
...fails, the second command will still run (and fail, too, as that directory does not exist yet). With && if the first command fails, the second command does not run.
– trysis
Jun 7 '15 at 14:22
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Difference between System.DateTime.Now and System.DateTime.Today
... clock of the computer that the code is running on. But what you get back does not have any information about that clock! The best that you get is that DateTime.Now.Kind == DateTimeKind.Local. But whose local is it? That information gets lost as soon as you do anything with the value, such as st...
nano error: Error opening terminal: xterm-256color
...hat there is some program missing that causes this, but unfortunately nano does not give more information as to why it exactly fails.
– shevy
Aug 29 '16 at 21:36
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Git commit in terminal opens VIM, but can't get back to terminal
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esc key does nothing for me. What is this cryptic commands, is this 2016 or 1996? Incredible...
– oyalhi
Jan 8 '16 at 18:40
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Random number generator only generating one random number
...antee of what happens internally is the bigger issue, though; since Random does not make any guarantees of thread-safety. Thus there are two valid approaches:
Synchronize so that we don't access it at the same time from different threads
Use different Random instances per thread
Either can be fi...
How many threads can a Java VM support?
How many threads can a Java VM support? Does this vary by vendor? by operating system? other factors?
12 Answers
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Print Current Mercurial Revision Hash?
...the changeset we are updated to, use "hg id". The only problem is, "hg id" does not support templates nor have an option to print long hash (unless someone knows how to do that).
– Eiver
Nov 28 '11 at 11:13
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How to initialize an array in one step using Ruby?
...y will be:
array = Array.new(3) { |i| (i+1).to_s }
Finally, although it doesn't produce the same array of three strings as the other answers above, note also that you can use enumerators in Ruby 1.8.7+ to create arrays; for example:
array = 1.step(17,3).to_a
#=> [1, 4, 7, 10, 13, 16]
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bash: Bad Substitution
...ang line will be ignored and the script will be interpreted by dash, which does not support that string substitution syntax.
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