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Selectors in Objective-C?
First, I'm not sure I really understand what a selector is. From my understanding, it's the name of a method, and you can assign it to a class of type 'SEL' and then run methods such as respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation?
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Why are hexadecimal numbers prefixed with 0x?
Why are hexadecimal numbers prefixed as 0x ?
I understand the usage of the prefix but I don't understand the significance of why 0x was chosen.
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How to list all users in a Linux group?
How do I list all members of a group in Linux (and possibly other unices)?
20 Answers
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Java: getMinutes and getHours
How do you get Hours and Minutes since Date.getHours and Date.getMinutes got deprecated? The examples that I found on Google search used the deprecated methods.
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How do you debug MySQL stored procedures?
...milar to you.
I'll usually include a DEBUG param that defaults to false and I can set to true at run time. Then wrap the debug statements into an "If DEBUG" block.
I also use a logging table with many of my jobs so that I can review processes and timing. My Debug code gets output there as wel...
How can I detect if a file is binary (non-text) in python?
...es with a mime.types file that you could parse into a set of lists, binary and text and then check to see if the mime is in your text or binary list.
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Bootstrap: Position of dropdown menu relative to navbar item
...lasses that need to be applied changed with the release of Bootstrap 3.1.0 and again with the release of Bootstrap 4. If one of the below solutions doesn't seem to be working double check the version number of Bootstrap that you're importing and try a different one.
Bootstrap 3
Before v3.1.0
You ...
How to convert byte array to string and vice versa?
I have to convert a byte array to string in Android, but my byte array contains negative values.
22 Answers
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How should I handle “No internet connection” with Retrofit on Android
I'd like to handle situations when there is no internet connection. Usually I'd run:
7 Answers
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How do I update pip itself from inside my virtual environment?
...ng to pip --version , I currently have pip 1.1 installed in my virtualenv and I want to update to the latest version.
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