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count number of lines in terminal output
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491
Pipe the result to wc using the -l (line count) switch:
grep -Rl "curl" ./ | wc -l
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How to count TRUE values in a logical vector
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179
There are some problems when logical vector contains NA values.
See for example:
z <- c(TR...
Is there a way of having git show lines added, lines changed and lines removed?
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135
You can use:
git diff --numstat
to get numerical diff information.
As far as separating mo...
Run two async tasks in parallel and collect results in .NET 4.5
... {
Console.WriteLine("Starting");
var task1 = Sleep(5000);
var task2 = Sleep(3000);
int[] result = await Task.WhenAll(task1, task2);
Console.WriteLine("Slept for a total of " + result.Sum() + " ms");
}
private a...
How to check if an int is a null
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189
An int is not null, it may be 0 if not initialized.
If you want an integer to be able to be n...
Iterating over every two elements in a list
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21 Answers
21
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Usage of sys.stdout.flush() method
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179
Python's standard out is buffered (meaning that it collects some of the data "written" to stan...
Regular expression for a string containing one word but not another
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146
This should do it:
^(?!.*details\.cfm).*selector=size.*$
^.*selector=size.*$ should be clea...
SQL Add foreign key to existing column
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191
Error indicates that there is no UserID column in your Employees table. Try adding the column ...
Installing MSBuild 4.0 without Visual Studio 2010
I installed .NET 4.0 and VS 2010 RC on my laptop and MSBuild was automatically installed. I was hoping to build a continuous integration server by just installing the .NET SDK without VS 2010, so I downloaded the .NET 4.0 Framework from Microsoft at this link . Unfortunately, it doesn't appear to...