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Correctly determine if date string is a valid date in that format
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If you are using PHP 5.2.x, you should use strtotime to get the unix timestamp then date('Y-m-d', $t) to get the string date. Then you compare them just like this answer.
– pedromanoel
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How do I use raw_input in Python 3
... a leftover from when Python was less security conscious. The change simplified the language. See also "import this" for a deeper explanation. Would you prefer a dead language to one that evolves? There are plenty of those around.
– meawoppl
Apr 9 '14 at ...
How to check if a column exists in Pandas
Is there a way to check if a column exists in a Pandas DataFrame?
3 Answers
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Fastest way to check if a value exists in a list
What is the fastest way to know if a value exists in a list (a list with millions of values in it) and what its index is?
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Dictionaries and default values
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+1 for readability, but if/else is much faster. That might or might not play a role.
– Tim Pietzcker
Jul 6 '13 at 9:20
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How can you encode a string to Base64 in JavaScript?
...) accepts a “string” where each character represents an 8-bit byte – if you pass a string containing characters that can’t be represented in 8 bits, it will probably break. This isn’t a problem if you’re actually treating the string as a byte array, but if you’re trying to do something...
Compare equality between two objects in NUnit
...e that implementation for multiple tests, and probably makes sense to have if objects should be able to compare themselves with siblings anyway.
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Algorithm to return all combinations of k elements from n
...ickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous and avoid repetitions. There are many of t...
Bash array with spaces in elements
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I think the issue might be partly with how you're accessing the elements. If I do a simple for elem in $FILES, I experience the same issue as you. However, if I access the array through its indices, like so, it works if I add the elements either numerically or with escapes:
for ((i = 0; i < ${#...
In Clojure, when should I use a vector over a list, and the other way around?
...de" "generating back-to-front" -> means precisely?? I am really having difficulty with this question because in my book laziness + declarative style = far better performance, and yet vectors are suggested everywhere in Clojure which leaves me totally confused.
– Jimmy Hoffa
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