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How to grey out a button?
I have a button defined as shown below. When I want to disable it I use my_btn.setEnabled(false) , but I would also like to grey it out. How can I do that?
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Remove new lines from string and replace with one empty space
...ce('/\s\s+/', ' ', $string));
Multiple spaces and newlines are replaced with a single space.
Edit: As others have pointed out, this solution has issues matching single newlines in between words. This is not present in the example, but one can easily see how that situation could occur. An alternat...
The point of test %eax %eax [duplicate]
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CMP subtracts the operands and sets the flags. Namely, it sets the zero flag if the difference is zero (operands are equal).
TEST sets the zero flag, ZF, when the result of the AND operation is zero. If two operands are equal, their bitwise AND is zero when both are zero. TEST a...
What does axis in pandas mean?
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It specifies the axis along which the means are computed. By default axis=0. This is consistent with the numpy.mean usage when axis is specified explicitly (in numpy.mean, axis==None by default, which computes the mean value ...
Getting all types that implement an interface
Using reflection, how can I get all types that implement an interface with C# 3.0/.NET 3.5 with the least code, and minimizing iterations?
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How to round to 2 decimals with Python?
I am getting a lot of decimals in the output of this code (Fahrenheit to Celsius converter).
16 Answers
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Run Command Prompt Commands
Is there any way to run command prompt commands from within a C# application? If so how would I do the following:
14 Answe...
Disable hover effects on mobile browsers
I'm writing a Web site that's meant to be used from both desktops and tablets. When it's being visited from a desktop, I want the clickable areas of the screen to light up with :hover effects (different background color, etc.) With a tablet, there's no mouse, so I don't want any hover effects.
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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
...al principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used?
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What's the difference between emulation and simulation? [duplicate]
...icate the behavior of an old HP calculator, there are two options:
You write new program that draws the calculator's display and keys, and when the user clicks on the keys, your programs does what the old calculator did. This is a Simulator
You get a dump of the calculator's firmware, then write a...