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Why do most C developers use define instead of const? [duplicate]
... Bart van Ingen SchenauBart van Ingen Schenau
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Aggregate / summarize multiple variables per group (e.g. sum, mean)
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Where is this year() function from?
You could also use the reshape2 package for this task:
require(reshape2)
df_melt <- melt(df1, id = c("date", "year", "month"))
dcast(df_melt, year + month ~ variable, sum)
# year month x1 x2
1 2000 1 -80.83405 -224.9540159
2 2000 ...
Include only certain file types when searching in Visual Studio
Often when I want to search through my code in Visual Studio, I know the thing I'm looking for is in some C# code. However, as I've used the same variable name in a JavaScript file, I have to wade through all those search results too. This gets even worse when the text I'm looking for is also used i...
Determine version of Entity Framework I am using?
...e are two versions 1 and 2? And version 2 is referred to as Entity Framework 4.0?
10 Answers
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How to search for a string in cell array in MATLAB?
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I guess the following code could do the trick:
strs = {'HA' 'KU' 'LA' 'MA' 'TATA'}
ind=find(ismember(strs,'KU'))
This returns
ans =
2
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Is it correct to use alt tag for an anchor link?
Is it correct to use alt tag for an anchor link, something like
7 Answers
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LINQ Distinct operator, ignore case?
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Marc Gravell♦Marc Gravell
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Joining two lists together
If I have two lists of type string (or any other type), what is a quick way of joining the two lists?
15 Answers
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Get the short Git version hash
...his:
git rev-parse --short HEAD
The command git rev-parse can do a remarkable number of different things, so you'd need to go through the documentation very carefully to spot that though.
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Execution time of C program
.... I have searched for answers, but they all seem to suggest using the clock() function, which then involves calculating the number of clocks the program took divided by the Clocks_per_second value.
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