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Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
I'd love to create a "back" left-arrow-bezel button in a UIToolbar .
24 Answers
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Why is a boolean 1 byte and not 1 bit of size?
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12 Answers
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Why is creating a new process more expensive on Windows than Linux?
I've heard that creating a new process on a Windows box is more expensive than on Linux. Is this true? Can somebody explain the technical reasons for why it's more expensive and provide any historical reasons for the design decisions behind those reasons?
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select * vs select column
If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory?
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Is there a simple way to convert C++ enum to string?
Suppose we have some named enums:
34 Answers
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git: 'credential-cache' is not a git command
I followed these instructions to the letter, including the part about password caching. It seems like the instructions are wrong, because every time I git push origin master I get this error:
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What is the meaning of “$” sign in JavaScript
In the following JavaScript code there is a dollar ( $ ) sign. What does it mean?
7 Answers
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How to sort a dataframe by multiple column(s)
I want to sort a data.frame by multiple columns. For example, with the data.frame below I would like to sort by column z (descending) then by column b (ascending):
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Why is Double.MIN_VALUE in not negative
Can anyone shed some light on why Double.MIN_VALUE is not actually the minimum value that Doubles can take? It is a positive value, and a Double can of course be negative.
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127 Return code from $?
What is the meaning of return value 127 from $? in UNIX.
8 Answers
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