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Does name length impact performance in Redis?
...et, set lookup methods are O(1). The more complex operations on a set (SDIFF, SUNION, SINTER) are O(N). Chances are that populating $userId was a more expensive operation than using a longer key.
Redis comes with a benchmark utility called redis-benchmark, if you modify the "GET" test in src/red...
How to read a file in Groovy into a string?
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String fileContents = new File('/path/to/file').text
If you need to specify the character encoding, use the following instead:
String fileContents = new File('/path/to/file').getText('UTF-8')
share
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Why does pylint object to single character variable names?
...n [customer_address for customer_address in thing.get_customer_addresses() if customer_address.is_proper()] vs return [a for a in thing.get_customer_addresses() if a.is_proper()] I claim the latter is more clear, as a is obvious from the context. In general, variable length should correlate ...
What is the easiest way in C# to trim a newline off of a string?
...ment.NewLine.Length);
}
return text;
}
It's somewhat inefficient if there are multiple newlines, but it'll work.
Alternatively, if you don't mind it trimming (say) "\r\r\r\r" or "\n\n\n\n" rather than just "\r\n\r\n\r\n":
// No need to create a new array each time
private static readonly...
Insertion Sort vs. Selection Sort
I am trying to understand the differences between Insertion Sort and Selection Sort.
20 Answers
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Inputting a default image in case the src attribute of an html is not valid?
...t;img> tag, in case the src attribute is invalid (using only HTML)? If not, what would be your lightweight way to work around it?
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Change Screen Orientation programmatically using a Button
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If I set the orientation to landscape programatically as this answer, the user is not able anymore to change the orientation by rotating the device. Any way to handle this problem? I want to do what was taught in this answer ...
What are all codecs and formats supported by FFmpeg?
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That would only be a list of formats supported by a specific build/installation of FFmpeg. There are a very wide range of FFmpeg builds in use.
– mikerobi
Oct 5 '11 at 19:02
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Count number of occurences for each unique value
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Ah, yes, I can use this, with some slight modification: t(as.data.frame(table(v))[,2]) is exactly what I need, thank you
– gakera
Nov 18 '10 at 13:30
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iphone ios running in separate thread
...tch_get_main_queue(), ^{
// Add code here to update the UI/send notifications based on the
// results of the background processing
});
});
If you haven't done so already, check out the videos from WWDC 2010 on libdispatch/GCD/blocks.
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