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Can I see changes before I save my file in Vim?
...command in vim is:
:!<command>
Inside the shell environment issued by vim % happens to point to the current filename. You can verify this by executing the following:
:!echo %
This should output the filename (or an error, if vim was run without a filename).
Using cat we can also output th...
How do you set your pythonpath in an already-created virtualenv?
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It seems odd that virtualenv doesn't do this by default.
– Seth
Oct 8 '17 at 0:11
2
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Given final block not properly padded
...ypt PKCS5-padded data with the wrong key, and then unpad it (which is done by the Cipher class automatically), you most likely will get the BadPaddingException (with probably of slightly less than 255/256, around 99.61%), because the padding has a special structure which is validated during unpad an...
How to get the index of a maximum element in a numpy array along one axis
...you asked for. Alternatively, you can convert to a list of x,y coordinates by:
x_y_coords = zip(indices[0], indices[1])
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Embedding DLLs in a compiled executable
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I highly recommend to use Costura.Fody - by far the best and easiest way to embed resources in your assembly. It's available as NuGet package.
Install-Package Costura.Fody
After adding it to the project, it will automatically embed all references that are copied ...
What is causing this ActiveRecord::ReadOnlyRecord error?
...f
you use this option, saving the same
record will now fail. Use find_by_sql
to work around.
Using find_by_sql is not really an alternative as it returns raw row/column data, not ActiveRecords. You have two options:
Force the instance variable @readonly to false in the record (hack)
Use ...
What's the yield keyword in JavaScript?
... through the iterative algorithm. Each step's value is the value specified by the yield keyword. Think of yield as the generator-iterator version of return, indicating the boundary between each iteration of the algorithm. Each time you call next(), the generator code resumes from the statement follo...
Passing properties by reference in C#
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Properties cannot be passed by reference. Here are a few ways you can work around this limitation.
1. Return Value
string GetString(string input, string output)
{
if (!string.IsNullOrEmpty(input))
{
return input;
}
return outpu...
Understanding Apache's access log
...e remote host (ie the client IP)
%l is the identity of the user determined by identd (not usually used since not reliable)
%u is the user name determined by HTTP authentication
%t is the time the request was received.
%r is the request line from the client. ("GET / HTTP/1.0")
%>s is the status co...
How to create custom easing function with Core Animation?
...I'd like to use a more interesting easing function than the few provided by Apple (EaseIn/EaseOut etc). For instance, a bounce or elastic function.
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