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What is __gxx_personality_v0 for?
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It's part of the exception handling. The gcc EH mechanism allows to mix various EH models, and a personality routine is invoked to determine if an exception match, what finalization to invoke, etc. This specific personality routine is for C++ exception handling (as opposed to, say, gcj/Java e...
Set the maximum character length of a UITextField
... class has no max length property, it's relatively simple to get this functionality by setting the text field's delegate and implementing the following delegate method:
Objective-C
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)s...
Sass - Converting Hex to RGBa for background opacity
I have the following Sass mixin, which is a half complete modification of an RGBa example :
5 Answers
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Is there such a thing as min-font-size and max-font-size?
...ng a bit late here, I don't get that much credit for it, I am just doing a mix of the answers below because I was forced to do that for a project.
So to answer the question : There is no such thing as this CSS property.
I don't know why, but I think it's because they are afraid of a misused of thi...
How do I set environment variables from Java?
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This limitation of java is a little bit of a cop out. There is no reason for java not letting you set env vars other than "because we don't want java to do this".
– IanNorton
Feb 27 '17 at 9:01
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Passing Parameters JavaFX FXML
...t mechanisms for passing parameters to FXML controllers.
For small applications I highly recommend passing parameters directly from the caller to the controller - it's simple, straightforward and requires no extra frameworks.
For larger, more complicated applications, it would be worthwhile investig...
“unrecognized selector sent to instance” error in Objective-C
I created a button and added an action for it, but as soon as it invoked, I got this error:
38 Answers
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CSV file written with Python has blank lines between each row
...each \n into \r\n.
In Python 3 the required syntax changed (see documentation links below), so open outfile with the additional parameter newline='' (empty string) instead.
Examples:
# Python 2
with open('/pythonwork/thefile_subset11.csv', 'wb') as outfile:
writer = csv.writer(outfile)
# Pyt...
Storing money in a decimal column - what precision and scale?
...rency value. Make sure your code knows which is which and doesn't get them mixed up. Avoid using floating point values even here.
Adding all those rules together, we decided on the following rules. In running code, currencies are stored using an integer for the smallest unit.
class Currency {
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Error - trustAnchors parameter must be non-empty
...buntu-3ubuntu1)
OpenJDK 64-Bit Server VM (build 10.0.1+10-Ubuntu-3ubuntu1, mixed mode)
There are alternative workarounds as well, but those have their own side effects which will require extra future maintenance, for no payoff whatsoever.
The next-best workaround is to add the row
javax.net.ss...