大约有 23,000 项符合查询结果（耗时：0.0404秒） [XML]
Split comma-separated strings in a column into separate rows
... is the fastest1.
The benchmarked solutions include
Matthew Lundberg's base R approach but modified according to Rich Scriven's comment,
Jaap's two data.table methods and two dplyr / tidyr approaches,
Ananda's splitstackshapesolution,
and two additional variants of Jaap's data.table methods.
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Open terminal here in Mac OS finder [closed]
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Clarification (thanks @vgm64): if you're already in Terminal, this lets you quickly change to the topmost Finder window without leaving Terminal. This way, you can avoid using the mouse.
I've added the following to my .bash_profile so I can type cdff...
How to convert R Markdown to PDF?
...ces are to files and not to data stored in the HTML file (i.e., I removed 'base64_images' from the option list).
The resulting output looked like this. It has clearly made a very LaTeX style document in contrast to what I get if I print the HTML file to pdf from a browser.
Getting up-to-date versi...
Prevent tabstop on A element (anchor link) in HTML
... screen readers, etc). If you know that this isn't a problem for your user base, then it should be fine.
– Ricardo Sanchez
Mar 29 '18 at 0:27
add a comment
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Multiple linear regression in Python
...5
Df Residuals: 19 BIC: 64.59
Df Model: 3
==============================================================================
coef std err t P>|t| ...
Multiline syntax for piping a heredoc; is this portable?
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Hi, check this, for example
#!/bin/sh
( base32 -d | base64 -d )<<ENDOFTEXT
KNDWW42DNNSHS5ZXPJCG4MSVM5MVQVT2JFCTK3DELBFDCY2IIJYGE2JUJNHWS22LINVHQMCMNVFD
CWJQIIZVUV2JOVNEOVJLINTW6PIK
ENDOFTEXT
regards
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Regex to validate date format dd/mm/yyyy
...uzonOfir Luzon
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Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
...o load from https:// from secure order pages and http:// from other pages, based on the current URL. I found that starting the URL with a double slash inherits the current protocol. Do all browsers support this technique?
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Change Name of Import in Java, or import two classes with the same name
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It's quite annoying to see that (at least) 3 JVM-based languages (Groovy, Scala & Kotlin) have this feature but Java itself still doesn't ...
– Matthias
Feb 7 '18 at 14:31
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How can I use a DLL file from Python?
... The link in this answer is broken.
– Kaliber64
Feb 19 '13 at 4:15
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If the link doesn't...