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Convert a list to a data frame
I have a nested list of data. Its length is 132 and each item is a list of length 20. Is there a quick way to convert this structure into a data frame that has 132 rows and 20 columns of data?
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Convert dmesg timestamp to custom date format
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edited Mar 23 at 12:56
drescherjm
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How do I format a Microsoft JSON date?
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1703
eval() is not necessary. This will work fine:
var date = new Date(parseInt(jsonDate.substr(6)))...
Ruby - elegantly convert variable to an array if not an array already
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153
[*foo] or Array(foo) will work most of the time, but for some cases like a hash, it messes it up...
const char* concatenation
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answered Jan 3 '10 at 14:05
codaddictcodaddict
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How to debug a referenced dll (having pdb)
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113
If you have a project reference, it should work immediately.
If it is a file (dll) reference, y...
My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
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Plugin networking
HTTP long poll, streaming
Also note that there is a W3C proposal for standardizing HTTP streaming called Server-Sent Events. It is currently fairly early in it's evolution and is designed to provide a standard Javascript API with comparable simplicity to WebSockets.
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What is the difference between map and flatMap and a good use case for each?
...wo line-lengths:
rdd.map(_.length).collect
res1: Array[Int] = Array(13, 16)
But flatMap (loosely speaking) transforms an RDD of length N into a collection of N collections, then flattens these into a single RDD of results.
rdd.flatMap(_.split(" ")).collect
res2: Array[String] = Array(...
How do I convert Word files to PDF programmatically? [closed]
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w5m
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answered Mar 3 '09 at 20:58
Eric NessEric Ness
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How to join strings in Elixir?
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answered Dec 29 '13 at 19:43
thiagofmthiagofm
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