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Difference between a Seq and a List in Scala
...ut habit is hard to break.
Seq is a good generalization for sequences, so if you program to interfaces, you should use that. Note that there are actually three of them: collection.Seq, collection.mutable.Seq and collection.immutable.Seq, and it is the latter one that is the "default" imported into ...
Django: Why do some model fields clash with each other?
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It should also be mentioned that if you do not need to use the reverse relations for all models. In some cases you might wish the model relation to be one way. In this case you use related_name='+'. This tells Django to create a one way relation and ignore t...
Pull request without forking?
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If you don't have access to create branches on that repository, there is no way to create a pull request without forking.
share
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Convert Elixir string to integer or float
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Note that this will return a tuple (if successful) and not the integer directly. If you want to do that, see @Szymon Jeż answer with String.to_integer/1
– user4275029
Sep 26 '16 at 12:27
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Add icon to submit button in twitter bootstrap 2
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The only problem I have had with this approach is if there are other buttons in the form, then your form won't submit when pressing the enter key on the keyboard, as one of the other buttons will take precedence. Any known workarounds?
– Jeshurun
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Mercurial - all files that changed in a changeset?
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If you want to list only files that have changed then you should be using "status command"
The following will list the changes to files in revision REV
hg status --change REV
...
Merging two images in C#/.NET
...}
return finalImage;
}
catch (Exception ex)
{
if (finalImage != null)
finalImage.Dispose();
throw ex;
}
finally
{
//clean up memory
foreach (System.Drawing.Bitmap image in images)
{
image.Dispose();
...
Regex expressions in Java, \\s vs. \\s+
What's the difference between the following two expressions?
4 Answers
4
...
How are Anonymous inner classes used in Java?
...method that returns the first number larger than i in the given list, or i if no number is larger:
public static int larger(final List<Integer> ns, final int i) {
for (Integer n : ns)
if (n > i)
return n;
return i;
}
And then you have another method that returns the firs...
How do I get the row count of a pandas DataFrame?
...erty or just len(DataFrame.index). However, there are notable performance differences ( len(DataFrame.index) is fastest).
Code to reproduce the plot:
import numpy as np
import pandas as pd
import perfplot
perfplot.save(
"out.png",
setup=lambda n: pd.DataFrame(np.arange(n * 3).reshape(n, ...