大约有 44,000 项符合查询结果(耗时:0.0461秒) [XML]

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How can I pad an int with leading zeros when using cout

...tput an int with leading zeros, so the value 1 would be printed as 001 and the value 25 printed as 025 . How can I do this? ...
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How do I install an R package from source?

... If you have the file locally, then use install.packages() and set the repos=NULL: install.packages(path_to_file, repos = NULL, type="source") Where path_to_file would represent the full path and file name: On Windows it will look something like this: "C:\\RJSONIO_0.2-3.tar.gz...
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Daylight saving time and time zone best practices [closed]

I am hoping to make this question and the answers to it the definitive guide to dealing with daylight saving time, in particular for dealing with the actual change overs. ...
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Excel “External table is not in the expected format.”

...xcel 2007 file with a connection string that uses: Microsoft.Jet.OLEDB.4.0 and Extended Properties=Excel 8.0 Using the following connection string seems to fix most problems. public static string path = @"C:\src\RedirectApplication\RedirectApplication\301s.xlsx"; public static string connStr = "Pr...
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Clear terminal in Python [duplicate]

Does any standard "comes with batteries" method exist to clear the terminal screen from a Python script, or do I have to go curses (the libraries, not the words)? ...
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What is a 'multi-part identifier' and why can't it be bound?

...d up rewriting the query, change the order of joins, change some groupings and then it eventually works, but I just don't quite get it. ...
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What's the best way to check if a file exists in C?

...exists } else { // file doesn't exist } You can also use R_OK, W_OK, and X_OK in place of F_OK to check for read permission, write permission, and execute permission (respectively) rather than existence, and you can OR any of them together (i.e. check for both read and write permission using R...
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Selenium: FirefoxProfile exception Can't load the profile

...o selenium where I am getting this error because I'm trying to use a proxy and only 2 of the 4 configured changes in the profile have been accepted by firefox, so the proxy isn't configured to talk to the extension. Not sure why this is happening... https://github.com/seleniumhq/selenium-google-cod...
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How do I find the install time and date of Windows?

...ut how can I find out (hopefully via an API/registry key) the install time and date of Windows? 19 Answers ...
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set gvim font in .vimrc file

...owing (Uses Consolas size 11 on Windows, Menlo Regular size 14 on Mac OS X and Inconsolata size 12 everywhere else): if has("gui_running") if has("gui_gtk2") set guifont=Inconsolata\ 12 elseif has("gui_macvim") set guifont=Menlo\ Regular:h14 elseif has("gui_win32") set guifont=Con...