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Most efficient way to determine if a Lua table is empty (contains no entries)?
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answered Aug 10 '09 at 1:14
Norman RamseyNorman Ramsey
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Replacing NAs with latest non-NA value
...,'a',NA,NA,NA,NA,NA,NA,NA,NA,'b','c','d',NA,NA,NA,NA,NA,'e')
xx = rep(x, 1000000)
system.time({ yzoo = na.locf(xx,na.rm=F)})
## user system elapsed
## 2.754 0.667 3.406
system.time({ yrep = repeat.before(xx)})
## user system elapsed
## 0.597 0.199 0.793
Edit
As this ...
What is __main__.py?
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answered Oct 28 '10 at 12:41
Ned BatchelderNed Batchelder
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Quick Way to Implement Dictionary in C
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10 Answers
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Importing a CSV file into a sqlite3 database table using Python
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answered May 22 '10 at 12:20
mechanical_meatmechanical_meat
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Should I compile release builds with debug info as “full” or “pdb-only”?
In Visual Studio 2010 for a C# project, if you go to Project Properties > Build > Advanced > Debug Info you have three options: none, full, or pdb-only. Based on the answer to this question , I believe I understand some of the differences between full and pdb-only. However, which is more appropri...
Analyze audio using Fast Fourier Transform
...ly spaced frequencies, starting at 0. Because your sampling frequency is 44100 samples / sec. and the number of points in your FFT is 256, your frequency spacing is 44100 / 256 = 172 Hz (approximately)
The first coefficient in your array will be the 0 frequency coefficient. That is basically the av...
How to use WinForms progress bar?
...oid button1_Click(object sender, EventArgs e)
{
progressBar1.Maximum = 100;
progressBar1.Step = 1;
progressBar1.Value = 0;
backgroundWorker.RunWorkerAsync();
}
private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
var backgroundWorker = sender as BackgroundWor...
Error in : object of type 'closure' is not subsettable
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answered Jul 3 '12 at 10:01
Joshua UlrichJoshua Ulrich
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Ruby Regexp group matching, assign variables on 1 line
...s)
– Andrea Salicetti
Jan 25 '13 at 10:17
5
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