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Weighted random numbers
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1) calculate the sum of all the weights
2) pick a random number that is 0 or greater and is less than the sum of the weights
3) go through the items one at a time, subtracting their weight from your random number, until you get the item where the random number is less than that item's weight
Ps...
Why do we need argc while there is always a null at the end of argv?
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106
Yes, argv[argc]==NULL is guaranteed. See C11 5.1.2.2.1 Program startup (my emphasis)
If th...
Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
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790
There are at least 6 (!) ways to clone an array:
loop
slice
Array.from()
concat
spread operator...
Postgresql SELECT if string contains
... Frans van BuulFrans van Buul
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5
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How to use a variable for the key part of a map
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– Michal Bernhard
Mar 2 '16 at 13:10
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Django connection to PostgreSQL: “Peer authentication failed”
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edited Sep 18 '17 at 11:05
answered Nov 22 '11 at 18:39
T...
PDO's query vs execute
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered Jan 15 '11 at 16:38
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What is the rationale for all comparisons returning false for IEEE754 NaN values?
...s a similar property that does hold. Clause 5.11, paragraph 2 of the 754-2008 standard:
Four mutually exclusive relations are possible: less than, equal, greater than, and unordered. The last case arises when at least one operand is NaN. Every NaN shall compare unordered with everything, includ...
Can I stretch text using CSS?
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Mike Chamberlain
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answered Aug 22 '12 at 3:24
Timothy PerezTimothy Perez
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Rebasing a branch including all its children
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40
git branch --contains C | \
xargs -n 1 \
git rebase --committer-date-is-author-date --preserve-m...