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How to read data when some numbers contain commas as thousand separator?
...
"Preprocess" in R:
lines <- "www, rrr, 1,234, ttt \n rrr,zzz, 1,234,567,987, rrr"
Can use readLines on a textConnection. Then remove only the commas that are between digits:
gsub("([0-9]+)\\,([0-9])", "\\1\\2", lines)
## [1] "www, rrr, 1234, ttt \n r...
Difference between a “coroutine” and a “thread”?
...ppen). The
kernel is not involved in the coroutine switches.
—http://www.boost.org/doc/libs/1_55_0/libs/coroutine/doc/html/coroutine/overview.html
A language that supports native threads can execute its threads (user threads) onto the operating system's threads (kernel threads). Every proces...
Discuz轻松生成sitemaps.xml网站地图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ncoding=\"UTF-8\"?>\n";
$sitemap.="<urlset\n";
$sitemap.="xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\"\n";
$sitemap.="xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
$sitemap.="xsi:schemaLocation=\"http://www.sitemaps.org/schemas/sitemap/0.9\n";
$sitemap.="http://www.sitema...
Where are the PostgreSQL logs on macOS?
...TF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
[...]
<key>StandardErrorPath</key>
<string>/usr/local/var/postgres/server.log</string>
</dict>
</pli...
How can I prevent the scrollbar overlaying content in IE10?
...ywhere even though there was plenty of content. Found this article http://www.rlmseo.com/blog/overflow-auto-problem-bug-in-ie/ which reduced to . . .
body {
overflow-x: visible;
}
. . . and did the trick for me.
How to escape regular expression special characters using javascript? [duplicate]
...ile /(\s)/ matches any whitespace and captures the match.
Source: http://www.javascriptkit.com/javatutors/redev2.shtml
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CSS values using HTML5 data attribute [duplicate]
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There is, indeed, prevision for such feature, look http://www.w3.org/TR/css3-values/#attr-notation
This fiddle should work like what you need, but will not for now.
Unfortunately, it's still a draft, and isn't fully implemented on major browsers.
It does work for content on pseud...
How to trigger Autofill in Google Chrome?
...ur input tags, and set their values according to the HTML spec here http://www.whatwg.org/specs/web-apps/current-work/multipage/association-of-controls-and-forms.html#autofill-field .
Example:
<input name="fname" autocomplete="given-name" type="text" placeholder="First Name" required>
The...
Laravel blank white screen
...ng the app/storage directory writable by Apache (either group writable to "www-data", "apache" or world-writable - that depends on your server setup.
Web Server User
On Ubuntu/Debian servers, your PHP may be running as user "www-data". On CentOS/RedHat/Fedora servers, you PHP may be running as use...
Find files containing a given text
...add file names, extensions. Wildcards accepted
For more info see: http://www.gnu.org/software/grep/
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