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Rename specific column(s) in pandas
...]
Timings:
%%timeit
df.rename(columns={'gdp':'log(gdp)'}, inplace=True)
10000 loops, best of 3: 168 µs per loop
%%timeit
df.columns = ['log(gdp)' if x=='gdp' else x for x in df.columns]
10000 loops, best of 3: 58.5 µs per loop
...
Update multiple rows in same query using PostgreSQL
...w sql construct today
– javadba
Sep 10 at 19:47
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Finding Variable Type in JavaScript
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answered Dec 16 '10 at 0:22
Felix KlingFelix Kling
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Algorithm to detect overlapping periods [duplicate]
...awlingRawling
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What does the regular expression /_/g mean?
...owLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\...
Disabling browser print options (headers, footers, margins) from page?
... */
}
body
{
border: solid 1px blue ;
margin: 10mm 15mm 10mm 15mm; /* margin you want for the content */
}
</style>
</head>
<body>
<div>Top line</div>
<div>Line 2</div>
</body>
</html>
Note that we basic...
What's the fastest way to merge/join data.frames in R?
... 3x slower than data.table and in the second its 200x faster than plyr and 100 times faster than data.table. Below we show the input code, the output timings for the merge and the output timings for the aggregate. Its also worthwhile noting that sqldf is based on a database and therefore can hand...
What do people find difficult about C pointers? [closed]
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answered Oct 26 '10 at 17:30
jkerianjkerian
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How to encrypt/decrypt data in php?
...ation using base64_encode() or bin2hex(), doing so requires between 33% to 100% more storage space.
Decryption
Decryption of the stored values is similar:
function pkcs7_unpad($data)
{
return substr($data, 0, -ord($data[strlen($data) - 1]));
}
$row = $result->fetch(PDO::FETCH_ASSOC); // r...
How can I parse a time string containing milliseconds in it with python?
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compie
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answered Mar 30 '09 at 17:49
DNSDNS
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