大约有 16,000 项符合查询结果(耗时:0.0235秒) [XML]

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What are the advantages of NumPy over regular Python lists?

... I've been trying to use "sys.getsizeof()" to compare the size of Python lists and NumPy arrays with the same number of elements and it doesn't seem to indicate that the NumPy arrays were that much smaller. Is this the case or is sys.getsizeof() havin...
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Choosing the default value of an Enum type without having to change values

...r any value that you want) by default to use the trick itself, you need to convert from int by code. there the implementation: #region ConvertingToEnum private int val; static Dictionary<int, string> dict = null; public Orientation(int val) { ...
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numpy: most efficient frequency counts for unique values in an array

... @YohanObadia - depending on the size f the array, first converting it to a series has made the final operation faster for me. I would guess at the mark of around 50,000 values. – n1k31t4 Oct 30 '18 at 11:50 ...
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Is there a way to check if int is legal enum in C#?

... @matti: Convert "78" into whatever number representation LoggingLevel uses as storage, then present that as a LoggingLevel enum value. – thecoop Apr 20 '10 at 12:36 ...
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Generate a Hash from string in Javascript

I need to convert strings to some form of hash. Is this possible in JavaScript? 22 Answers ...
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Why are unsigned int's not CLS compliant?

...verflow checking, and sign-agnostic addition mod 2^32, etc.; when asked to convert an object reference to a 32-bit integer primitive, the CLR neither knows nor cares whether the code using that number expects it to be signed or unsigned. Whether the compiler believes a number is signed or unsigned ...
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SQL Server: Make all UPPER case to Proper Case/Title Case

...ants to change it so that it does not ignore already-lower-case words, and converts them as well, e.g. "tom bombadil" to "Tom Bombadil", just change this one line -- SET @o = @o + @c to SET @o = @o + UPPER(@c) . =) – NateJ Jun 14 '17 at 18:02 ...
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PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip

...n-2-seconds-written-code, don’t use it in production): import os import sys import pg # Take the new schema name from the second cmd arguments (the first is the filename) newSchema = sys.argv[1] # Temperary folder for the dumps dumpFile = '/test/dumps/' + str(newSchema) + '.sql' # Settings db_...
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How to get year, month, day, hours, minutes, seconds and milliseconds of the current moment in Java?

... millis); Either way, this prints as of now: 2010-04-16 15:15:17.816 To convert an int to String, make use of String#valueOf(). If your intent is after all to arrange and display them in a human friendly string format, then better use either Java8's java.time.format.DateTimeFormatter (tutorial h...
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How do I translate an ISO 8601 datetime string into a Python datetime object? [duplicate]

...453-0400 or 2008-09-03T20:56:35.450686+05:00 use the following. These will convert all variations into something without variable delimiters like 20080903T205635.450686+0500 making it more consistent/easier to parse. import re # This regex removes all colons and all # dashes EXCEPT for the dash ind...