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How do I pick 2 random items from a Python set? [duplicate]
...n't, say, run reservoir sampling or some other algorithm that works on non-indexable collections.
– user2357112 supports Monica
Dec 22 '13 at 10:46
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What do the icons in Eclipse mean?
...eclipse versions except eclipse version:
https://help.eclipse.org/2019-09/index.jsp?nav=%2F1
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Mercurial Eclipse Plugin
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Check here instead: andrei.gmxhome.de/mercurialeclipse/index.html No registration required. The update site URL is at the bottom of the page. But read the whole thing anyway.
– n0rd
Dec 2 '10 at 18:55
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How to check whether a string contains a substring in JavaScript?
...port, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:
var string = "foo";
var substring = "oo";
console.log(string.indexOf(substring) !== -1);
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get string value from UISegmentedControl
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Objective-C
NSString *title = [segment titleForSegmentAtIndex:segment.selectedSegmentIndex];
Swift:
let title = segment.titleForSegment(at: segment.selectedSegmentIndex)
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How to split (chunk) a Ruby array into parts of X elements? [duplicate]
... Nice. I used something similar to foo.each_slice(3).each_with_index { |f, i| puts "#{f}, #{i}" } in order to work through the array in slices (or "chunks").
– user664833
Sep 14 '12 at 19:08
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Python 3 Online Interpreter / Shell [closed]
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This one, pyeval.appspot.com/index.html, has a friendlier interface
– Edwin Evans
Mar 15 '12 at 20:00
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In Ruby, how do I skip a loop in a .each loop, similar to 'continue' [duplicate]
...edo and retry.
Works also for friends like times, upto, downto, each_with_index, select, map and other iterators (and more generally blocks).
For more info see http://ruby-doc.org/docs/ProgrammingRuby/html/tut_expressions.html#UL.
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Get content of a cell given the row and column numbers
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Try =index(ARRAY, ROW, COLUMN)
where:
Array: select the whole sheet
Row, Column: Your row and column references
That should be easier to understand to those looking at the formula.
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Extract every nth element of a vector
...I want to extract every 6th element of
the original
You can do this by indexing a sequence:
foo <- 1:120
foo[1:20*6]
I would like to create a vector in
which each element is the i+6th
element of another vector.
An easy way to do this is to supplement a logical factor with FALSEs...