大约有 500 项符合查询结果(耗时:0.0221秒) [XML]

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How to make a great R reproducible example

...thing on larger objects, you can try my.df2 <- data.frame(a = sample(10e6), b = sample(letters, 10e6, replace = TRUE)) If you're working with spatial data via the raster package, you can generate some random data. A lot of examples can be found in the package vignette, but here's a small nugge...
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To ternary or not to ternary? [closed]

... community wiki 2 revs, 2 users 96%Ryan Delucchi ...
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Floating point vs integer calculations on modern hardware

...52649 double div: 4.691226 DigitalOcean 1GB Droplet Intel(R) Xeon(R) CPU E5-2630L v2 (running trusty) short add: 1.094323 short sub: 1.095886 short mul: 1.356369 short div: 4.256722 long add: 1.111328 long sub: 1.079420 long mul: 1.356105 long div: 7.422517 long long add: 1.057854 long long sub: ...
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“21天教你学会C++” - 创意 - 清泛网 - 专注C/C++及内核技术

...e in 24 Hours》(24小时学会文法和文体)。头200本书中,有96%是计算机书籍。 结论是,要么是人们非常急于学会计算机,要么就是不知道为什么计算机惊人地简单,比任何东西都容易学会。没有一本书是要在几天里教会人们欣...
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Gradle store on local file system

...rg.springframework/spring-jdbc/4.3.4.RELEASE/42175d194cf6aa7c716c0887f30255e5c0a5262c/spring-jdbc-4.3.4.RELEASE.jar share | improve this answer | follow | ...
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What SOAP client libraries exist for Python, and where is the documentation for them? [closed]

... community wiki 2 revs, 2 users 96%sstock ...
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Rendering HTML inside textarea

... 96% usage as of 2020 – ogostos Sep 9 at 9:11 add a comment  |  ...
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Is it valid to replace http:// with // in a ?

... community wiki 3 revs, 2 users 96%kennytm add a comment  |  ...
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How to get distinct values from an array of objects in JavaScript?

...//jsperf.com/filter-vs-dictionary-more-data When I ran this dictionary was 96% faster. share | improve this answer | follow | ...
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How do I make a semi transparent background?

... background: url('https://images.unsplash.com/photo-1503135935062- b7d1f5a0690f?ixlib=rb-enter code here0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=cf4d0c234ecaecd14f51a2343cc89b6c&dpr=1&auto=format&fit=crop&w=376&h=564&q=60&cs=tinysrgb') no-repeat; background-...