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Converting between datetime, Timestamp and datetime64
How do I convert a numpy.datetime64 object to a datetime.datetime (or Timestamp )?
12 Answers
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Best practices/performance: mixing StringBuilder.append with String.concat
...nal StringBuilder char[].
That being said you should use append() all the time and append raw strings (your first code snippet is correct).
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DateTime format to SQL format using C#
I am trying to save the current date time format from C# and convert it to an SQL Server date format like so yyyy-MM-dd HH:mm:ss so I can use it for my UPDATE query.
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Check if something is (not) in a list in Python
... at the start of the list, in evaluates faster:
lst = list(range(10001))
%timeit 1 in lst
%timeit 10000 in lst # Expected to take longer time.
68.9 ns ± 0.613 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
178 µs ± 5.01 µs per loop (mean ± std. dev. of 7 runs, 10000 loops eac...
Format date and time in a Windows batch script
...a Windows (Windows XP) batch script I need to format the current date and time for later use in files names, etc.
33 Answe...
java.util.regex - importance of Pattern.compile()?
... reason is to avoid creating the same Pattern object over and over. Every time you use one of the regex-powered methods in String (or the static matches() method in Pattern), it creates a new Pattern and a new Matcher. So this code snippet:
for (String s : myStringList) {
if ( s.matches("\\d+...
How to achieve function overloading in C?
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Yes!
In the time since this question was asked, standard C (no extensions) has effectively gained support for function overloading (not operators), thanks to the addition of the _Generic keyword in C11. (supported in GCC since version 4....
How to replace multiple substrings of a string?
...y we do it in one pass (=fast), and we do all the replacements at the same time, avoiding clashes like "spamham sha".replace("spam", "eggs").replace("sha","md5") being "eggmd5m md5" instead of "eggsham md5"
– flying sheep
Sep 4 '12 at 22:19
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C# DateTime to “YYYYMMDDHHMMSS” format
I want to convert a C# DateTime to "YYYYMMDDHHMMSS" format. But I don't find a built in method to get this format? Any comments?
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How to get the current time in milliseconds from C in Linux?
How do I get the current time on Linux in milliseconds?
6 Answers
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