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Fastest way to replace NAs in a large data.table
...dt, un = 0) gdata::NAToUnknown(dt, un)
f_dowle = function(dt) { # see EDIT later for more elegant solution
na.replace = function(v,value=0) { v[is.na(v)] = value; v }
for (i in names(dt))
eval(parse(text=paste("dt[,",i,":=na.replace(",i,")]")))
}
system.time(a_gdata = f_gdata(dt1))
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How to grant remote access permissions to mysql server for user?
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edited Sep 8 '14 at 19:35
answered Jun 4 '11 at 20:17
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Freely convert between List and IEnumerable
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It's just that if he edits myList then he would be editing myEnumrable, but if he edits listAgain then he wouldn't be editing myEnumerable.
– ChrisW
Jan 23 '09 at 12:28
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How to “comment-out” (add comment) in a batch/cmd?
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edited Jun 16 at 19:45
answered May 30 '13 at 15:02
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How to change the blue highlight color of a UITableViewCell?
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edited May 9 '13 at 4:27
Paras Joshi
19.8k1111 gold badges5353 silver badges6969 bronze badges
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How to get the day of week and the month of the year?
...month = months[ now.getMonth() ];
Or you can use the date.js library.
EDIT:
If you're going to use these frequently, you may want to extend Date.prototype for accessibility.
(function() {
var days = ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'];
var months...
How to install a previous exact version of a NPM package?
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edited Apr 19 '16 at 17:57
answered Apr 9 '13 at 2:01
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What is the easiest way to get current GMT time in Unix timestamp format?
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edited May 26 '13 at 7:26
answered May 26 '13 at 6:42
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Does Django scale? [closed]
... website. Quantcast stats and compete.com stats.
(*) The author of the edit, including such reference, used to work as outsourced developer in that project.
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How to calculate an angle from three points? [closed]
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edited Aug 25 '16 at 13:45
Peter G.
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