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How to dynamically compose an OR query filter in Django?
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answered May 12 '09 at 12:21
Dave WebbDave Webb
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How to design a multi-user ajax web application to be concurrently safe
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Hi Ra...
Get context of test project in Android junit test case
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edited Apr 24 '19 at 10:05
answered Jun 17 '15 at 11:52
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How to prevent ifelse() from turning Date objects into numeric objects
...d class of the inputs.
library(data.table)
dates <- fifelse(dates == '2011-01-01', dates - 1, dates)
str(dates)
# Date[1:5], format: "2010-12-31" "2011-01-02" "2011-01-03" "2011-01-04" "2011-01-05"
dplyr::if_else
From dplyr 0.5.0 release notes:
[if_else] have stricter semantics that ifelse():...
Mercurial for Beginners: The Definitive Practical Guide
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edited Jul 23 '09 at 15:22
answered Jul 23 '09 at 8:22
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How to increment a NSNumber
...alue = [number doubleValue];
number = [NSNumber numberWithDouble:value + 1.0];
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Make .gitignore ignore everything except a few files
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edited Dec 14 '17 at 10:12
Mohit
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answered Jun 12 '09 at 15...
What exactly does git's “rebase --preserve-merges” do (and why?)
...nk about, I have taken a few liberties. (e.g. I don't try to capture with 100% accuracy the precise order in which computations take place, and ignore some less central-seeming topics, e.g. what to do about commits that have already been cherry-picked between branches).
First, note that a non-merge...
Adding elements to object
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If you want cart to be an array of objects in the form { element: { id: 10, quantity: 1} } then perform:
var element = {}, cart = [];
element.id = id;
element.quantity = quantity;
cart.push({element: element});
JSON.stringify() was mentioned as a concern in the comment:
>> JSON.stringify...
Selecting only numeric columns from a data frame
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edited Apr 9 '18 at 12:07
answered May 2 '11 at 22:28
md...