大约有 48,000 项符合查询结果(耗时:0.0711秒) [XML]

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Why is auto_ptr being deprecated?

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Why does the order of the loops affect performance when iterating over a 2D array?

... 605 As others have said, the issue is the store to the memory location in the array: x[i][j]. Here's...
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How to pretty-print a numpy.array without scientific notation and with given precision?

... 581 You can use set_printoptions to set the precision of the output: import numpy as np x=np.rand...
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How to split a delimited string into an array in awk?

... 285 Have you tried: echo "12|23|11" | awk '{split($0,a,"|"); print a[3],a[2],a[1]}' ...
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How to check if smtp is working from commandline (Linux) [closed]

...rt_number} So telnet to your smtp server like telnet smtp.mydomain.com 25 And copy and paste the below helo client.mydomain.com mail from:<sender@mydomain.com> rcpt to:<to_email@mydomain.com> data From: test@mydomain.com Subject: test mail from command line this is test number 1 s...
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“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?

... bytes: \xF0\x90\x8D\x83 (U+10343 GOTHIC LETTER SAUIL). If you have MySQL 5.5 or later you can change the column encoding from utf8 to utf8mb4. This encoding allows storage of characters that occupy 4 bytes in UTF-8. You may also have to set the server property character_set_server to utf8mb4 in t...
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Loop backwards using indices in Python?

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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array

... 315 You could sort the array and then run through it and then see if the next (or previous) index is...
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How can I transition height: 0; to height: auto; using CSS?

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ASP.NET Identity DbContext confusion

A default MVC 5 App comes with this piece of code in IdentityModels.cs - this piece of code is for all the ASP.NET Identity operations for the default templates: ...