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How do I get elapsed time in milliseconds in Ruby?
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As stated already, you can operate on Time objects as if they were numeric (or floating point) values. These operations result in second resolution which can easily be converted.
For example:
def time_diff_milli(start, finish)
(finish ...
Extract a substring according to a pattern
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Here are a few ways:
1) sub
sub(".*:", "", string)
## [1] "E001" "E002" "E003"
2) strsplit
sapply(strsplit(string, ":"), "[", 2)
## [1] "E001" "E002" "E003"
3) read.table
read.table(text = string, sep = ":", as.is = TRUE)$V2
## [1] "E001" "...
bash: Bad Substitution
This bash script gives me Bad substitution error on Ubuntu. Any help will be highly appreciated.
11 Answers
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How do I get the current absolute URL in Ruby on Rails?
How can I get the current absolute URL in my Ruby on Rails view?
33 Answers
33
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How to sort the letters in a string alphabetically in Python
Is there an easy way to sort the letters in a string alphabetically in Python?
7 Answers
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How to convert/parse from String to char in java?
How do I parse a String value to a char type, in Java?
14 Answers
14
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Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?
I'm looking for a way to dump the structure of an object, similar to the PHP functions print_r and var_dump for debugging reasons.
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Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
I have a script using java to connect to display X11 in the port 10.0 at localhost
30 Answers
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What's the best way to inverse sort in scala?
What is the best way to do an inverse sort in scala? I imagine the following is somewhat slow.
9 Answers
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Xcode 6: Keyboard does not show up in simulator
The keyboard does not show up when I run the simulator and click in the UITextView. How do I re-enable the keyboard?
13 Ans...