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do..end vs curly braces for blocks in Ruby
I have a coworker who is actively trying to convince me that I should not use do..end and instead use curly braces for defining multiline blocks in Ruby.
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Python: List vs Dict for look up table
...of items in the data structure. If you don't need to associate values, use sets.
Memory
Both dictionaries and sets use hashing and they use much more memory than only for object storage. According to A.M. Kuchling in Beautiful Code, the implementation tries to keep the hash 2/3 full, so you might ...
How to get the size of a JavaScript object?
I want to know the size occupied by a JavaScript object.
20 Answers
20
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What is a Y-combinator? [closed]
...variables and
assignment we can at least avoid having to use
assignment to set up the recursion.
// Here's the function that we want to recurse.
X = function (recurse, n) {
if (0 == n)
return 1;
else
return n * recurse(recurse, n - 1);
};
// This will get X to recurse.
Y = function (bu...
“Cross origin requests are only supported for HTTP.” error when loading a local file
...odel into Three.js with JSONLoader , and that 3D model is in the same directory as the entire website.
28 Answers
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Determine the number of lines within a text file
Is there an easy way to programmatically determine the number of lines within a text file?
11 Answers
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Getting an element from a Set
Why doesn't Set provide an operation to get an element that equals another element?
24 Answers
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How to tell if a string is not defined in a Bash shell script
...nswer, though it is not spelled out simply. To distinguish whether VAR is set but empty or not set, you can use:
if [ -z "${VAR+xxx}" ]; then echo VAR is not set at all; fi
if [ -z "$VAR" ] && [ "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi
You probably can combine the two tes...
How to join int[] to a character separated string in .NET?
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How to take off line numbers in Vi?
...u are talking about show line number command in vi/vim
you could use
set nu
in commandline mode to turn on and
set nonu
will turn off the line number display or
set nu!
to toggle off display of line numbers
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