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Pandas convert dataframe to array of tuples
...e any reason that we'd think that the accepted answer is faster? The quick test I did indicates that the itertuples version is faster.
– T.C. Proctor
Mar 1 '19 at 19:27
2
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How to select rows from a DataFrame based on column values?
...pd.Series
mask = df['A'].values == 'foo'
I'll show more complete time tests at the end, but just take a look at the performance gains we get using the sample data frame. First, we look at the difference in creating the mask
%timeit mask = df['A'].values == 'foo'
%timeit mask = df['A'] == 'foo...
c# datatable to csv
...rray();
sb.AppendLine(string.Join(",", fields));
}
File.WriteAllText("test.csv", sb.ToString());
.net >= 4.0
And as Tim pointed out, if you are on .net>=4, you can make it even shorter:
StringBuilder sb = new StringBuilder();
IEnumerable<string> columnNames = dt.Columns.Cast&l...
When should TaskCompletionSource be used?
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It looks like no one mentioned, but I guess unit tests too can be considered real life enough.
I find TaskCompletionSource to be useful when mocking a dependency with an async method.
In actual program under test:
public interface IEntityFacade
{
Task<Entity> Ge...
How do I create a readable diff of two spreadsheets using git diff?
...eric or openoffice.org, and are mostly used to populate databases for unit testing with dbUnit . There are no easy ways of doing diffs on xls files that I know of, and this makes merging extremely tedious and error prone.
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How to change an Android app's name?
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@lxknvlk, from my testing on Android 5 and 5.1, the name referred to in this answer is displayed in the list of installed applications, the uninstall dialog, and the "App Info" screen for your app. If you want to customise the name shown in t...
jQuery AJAX file upload PHP
...load_max_filesize AND post_max_size configuration values, and be sure your test files do not exceed either. Here's some help how you check PHP configuration and how you set max filesize and post settings.
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Why use Gradle instead of Ant or Maven? [closed]
...m Maven.
So if you want to have a standard java build, like in maven, but test task has to do some custom step it could look like below.
build.gradle:
apply plugin:'java'
task test{
doFirst{
ant.copy(toDir:'build/test-classes'){fileset dir:'src/test/extra-resources'}
}
doLast{
...
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How to find out if you're using HTTPS without $_SERVER['HTTPS']
...e is a load balancer between the client and your server, this code doesn't test the connection between the client and the load balancer, but the connection between the load balancer and your server. To test the former connection, you would have to test using the HTTP_X_FORWARDED_PROTO header, but it...
jQuery Set Cursor Position in Text Area
...ax/libs/jquery/1.11.1/jquery.min.js"></script>
As of 2016, tested and working on Chrome, Firefox, IE11, even IE8 (see that last here; Stack Snippets don't support IE8).
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