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Selecting only numeric columns from a data frame
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296
EDIT: updated to avoid use of ill-advised sapply.
Since a data frame is a list we can use th...
Tell Ruby Program to Wait some amount of time
...following convenience syntax:
sleep(4.minutes)
# or, even longer...
sleep(2.hours); sleep(3.days) # etc., etc.
# or shorter
sleep(0.5) # half a second
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Renaming a branch in GitHub
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328
As mentioned, delete the old one on GitHub and re-push, though the commands used are a bit more...
Should I use 'has_key()' or 'in' on Python dicts?
...6
bluish
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answered Aug 24 '09 at 16:33
tonfatonfa
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Convert Object to JSON string
...ct is to be converted to JSON string
I got a link http://www.devcurry.com/2010/03/convert-javascript-object-to-json.html
but it need to have json2.js do jQuery has a native method to do this?
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How can I shift-select multiple checkboxes like GMail?
... });
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
<head>
</head>
<body>
<input type="checkbox" id="id_chk1" class="chkbox" value="1" />Check 1<br/>
<input type="checkbox" id="...
How to display a content in two-column layout in LaTeX?
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2 Answers
2
Active
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What is the idiomatic way to compose a URL or URI in Java?
...?q=httpclient&btnG=Google+Search&aq=f&oq=
}
}
Edit: as of v4.2 URIUtils.createURI() has been deprecated in favor of URIBuilder:
URI uri = new URIBuilder()
.setScheme("http")
.setHost("www.google.com")
.setPath("/search")
.setParameter("q", "httpclient")...
How to trigger XDebug profiler for a command line PHP script?
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261
You can pass INI settings with the -d flag: php -d xdebug.profiler_enable=On script.php.
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