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Uninstall old versions of Ruby gems
...# choose which ones you want to remove
gem uninstall rjb
# remove version 1.1.9 only
gem uninstall rjb --version 1.1.9
# remove all versions less than 1.3.4
gem uninstall rjb --version '<1.3.4'
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iOS Image Orientation has Strange Behavior
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12 Answers
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Homebrew install specific version of formula?
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2611
TLDR: brew install postgresql@8.4.4 See answer below for more details.
*(I’ve re-edited my...
How can I multiply and divide using only bit shifting and adding?
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14 Answers
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FIND_IN_SET() vs IN()
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100
SELECT name
FROM orders,company
WHERE orderID = 1
AND companyID IN (attachedComp...
Length of generator output [duplicate]
...ou have a lazy infinite generator? For example:
def fib():
a, b = 0, 1
while True:
a, b = b, a + b
yield a
This never terminates but will generate the Fibonacci numbers. You can get as many Fibonacci numbers as you want by calling next().
If you really need to know the ...
How to format time since xxx e.g. “4 minutes ago” similar to Stack Exchange sites
...nction timeSince(date) {
var seconds = Math.floor((new Date() - date) / 1000);
var interval = seconds / 31536000;
if (interval > 1) {
return Math.floor(interval) + " years";
}
interval = seconds / 2592000;
if (interval > 1) {
return Math.floor(interval) + " months";
}
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How do I convert a TimeSpan to a formatted string? [duplicate]
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14 Answers
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Concept behind these four lines of tricky C code
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The number 7709179928849219.0 has the following binary representation as a 64-bit double:
01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011
+^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- --------
+ s...