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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
I want to slice a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
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Format number to 2 decimal places
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Show as decimal
Select ifnull(format(100.00, 1, 'en_US'), 0)
100.0
Show as Percentage
Select concat(ifnull(format(100.00, 0, 'en_US'), 0), '%')
100%
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Why doesn't await on Task.WhenAll throw an AggregateException?
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Excellent clear answer, this should IMO be the selected one.
– bytedev
Feb 22 '18 at 17:16
3
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Is there a way to create multiline comments in Python?
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In any case, your text editor should also be able to easily comment-out a selected region (by placing a # in front of each line individually). If not, switch to a text editor that does.
Programming in Python without certain text editing features can be a painful experience. Finding the right edito...
LINQ Ring: Any() vs Contains() for Huge Collections
... result = context.Projects.Where(x => lstBizIds.Contains(x.businessId)).Select(x => x.projectId).ToList();
This will give the query
SELECT Id
FROM Projects
INNER JOIN (VALUES (1), (2), (3), (4), (5)) AS Data(Item) ON Projects.UserId = Data.Item
while Any() on the other hand always iterate t...
java: (String[])List.toArray() gives ClassCastException
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Please! Format your code! Select all of it at press "ctrl + k", or add " ` " before the first letter of code and at the last one another one. You can also select "{}" in the help at the top when writing the answer!
– M.K
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How to get all files under a specific directory in MATLAB?
...d the ability to apply a validation function to each file, allowing you to select them based on criteria other than just their names (i.e. file size, content, creation date, etc.).
NOTE: In newer versions of MATLAB (R2016b and later), the dir function has recursive search capabilities! So you can...
Commit changes to a different branch than the currently checked out branch with subversion
... It must not be the root of the repository, less to duplicate in that way;
Select TortoiseSVN -> "Branch/tag...";
Set To URL: "svn://host/repository/FooBar/branches/FooBarBranchName";
Make sure [*] Working copy is selected. This will ensure the changes are commited;
Log message: "Experimenting wi...
How to step back in Eclipse debugger?
..."Using Standard Create Process Launcher" and there will be a hyperlink to "Select other...". Click this and make sure "Use configuration specific settings" is checked then select "GDB (GSF) Create Process Launcher" and click okay. "Using GDB (GSF) Create Process Launcher" will now be displayed at th...
If using maven, usually you put log4j.properties under java or resources?
... configuration: Run->Run Configurations...->Java Application->New select the Classpath tab, select Advanced and browse to your src/resources directory.
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