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Ubuntu running `pip install` gives error 'The following required packages can not be built: * freety
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I think the -devel convention is for RPM and the -dev convention is for DEB. Try apt-cache search '^libfreetype.*-dev$' which gives libfreetype6-dev.
– Dietrich Epp
Dec 12 '13 at 3:09
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How to handle Handler messages when activity/fragment is paused
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Although the Android operating system does not appear to have a mechanism that sufficiently addresses your problem I believe this pattern does provide a relatively simple to implement workaround.
The following class is a wrapper around a...
Import PEM into Java Key Store
...at :
openssl x509 -outform der -in certificate.pem -out certificate.der
And after, import it in the keystore :
keytool -import -alias your-alias -keystore cacerts -file certificate.der
share
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Sorting a list using Lambda/Linq to objects
...write complex comparison operators, involving multiple comparison criteria and a failsafe GUID comparison in the end to ensure antisymmetry. Would you use a lambda expression for a complex comparison like that? If not, does this mean that lambda expression comparisons should only be limited to simpl...
How do I parse a string to a float or int?
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You should handle ValueError if you want to be safe
– Joe Bobson
Sep 9 '18 at 13:20
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How to get the first element of an array?
...x of 0. You know what they say about assumption...
– Andy
Aug 9 '15 at 16:19
16
@Andy There were...
pandas dataframe columns scaling with sklearn
I have a pandas dataframe with mixed type columns, and I'd like to apply sklearn's min_max_scaler to some of the columns. Ideally, I'd like to do these transformations in place, but haven't figured out a way to do that yet. I've written the following code that works:
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How can I wrap text in a label using WPF?
I have a TextBox and a Label. After clicking a button, I execute the following code:
10 Answers
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Convert data.frame columns from factors to characters
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Just following on Matt and Dirk. If you want to recreate your existing data frame without changing the global option, you can recreate it with an apply statement:
bob <- data.frame(lapply(bob, as.character), stringsAsFactors=FALSE)
This will...
What does “|=” mean? (pipe equal operator)
I tried searching using Google Search and Stack Overflow, but it didn't show up any results. I have seen this in opensource library code:
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