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What is the difference between 127.0.0.1 and localhost
... still have to do an actual lookup of localhost somewhere.
If you use 127.0.0.1, then (intelligent) software will just turn that directly into an IP address and use it. Some implementations of gethostbyname will detect the dotted format (and presumably the equivalent IPv6 format) and not do a looku...
Generate array of all letters and digits
...g ruby, is it possible to make an array of each letter in the alphabet and 0-9 easily?
7 Answers
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Best way of returning a random boolean value
...alse].sample is faster than rand(2) == 1. When I performed each operation 10 million times the rand method was 2.179s. The sample method was 1.645s.
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Jun 27 '16 at 4:47
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Convert list of dictionaries to a pandas DataFrame
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1044
Supposing d is your list of dicts, simply:
df = pd.DataFrame(d)
Note: this does not work with...
How to validate an email address in PHP
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10 Answers
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Transparent ARGB hex value
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205
Transparency is controlled by the alpha channel (AA in #AARRGGBB). Maximal value (255 dec, FF h...
What are the aspect ratios for all Android phone and tablet devices?
...══════════╣
║ 19.5 x 9 ║ 0.462... ║ 2.167... ║
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Finding duplicates in O(n) time and O(1) space
Input: Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times.
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Getting current date and time in JavaScript
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600
.getMonth() returns a zero-based number so to get the correct month you need to add 1, so calli...