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Using getopts to process long and short command line options
...get "--" as the flag. Then anything following that becomes OPTARG, and you test the OPTARG with a nested case.
This is clever, but it comes with caveats:
getopts can't enforce the opt spec. It can't return errors if the user supplies an invalid option. You have to do your own error-checking as y...
How to check if a String contains only ASCII?
...s with a value outside of the ASCII range. So the method still succeeds in testing for ASCII, even for strings containing emoji's.
For earlier Guava versions without the ascii() method you may write:
boolean isAscii = CharMatcher.ASCII.matchesAllOf(someString);
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Test if a string contains any of the strings from an array
How do I test a string to see if it contains any of the strings from an array?
14 Answers
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Performant Entity Serialization: BSON vs MessagePack (vs JSON)
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Quick test shows minified JSON is deserialized faster than binary MessagePack. In the tests Article.json is 550kb minified JSON, Article.mpack is 420kb MP-version of it. May be an implementation issue of course.
MessagePack:
//te...
Where to find “Microsoft.VisualStudio.TestTools.UnitTesting” missing dll?
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You have to add reference to
Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll
It can be found at "C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\PublicAssemblies\" directory (for VS2010 professional or above; .NET Framework 4.0).
or right click on your project and selec...
Concatenate a vector of strings/character
...cdefghijklmnopqrstuvwxyz"
And some benchmarks:
require(microbenchmark)
test <- stri_rand_lipsum(100)
microbenchmark(stri_paste(test, collapse=''), paste(test,collapse=''), do.call(paste, c(as.list(test), sep="")))
Unit: microseconds
expr min lq ...
Fastest way to determine if an integer's square root is an integer
I'm looking for the fastest way to determine if a long value is a perfect square (i.e. its square root is another integer):
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Why does struct alignment depend on whether a field type is primitive or user-defined?
... happen.
You can see it by making the struct members public and appending test code like this:
var test = new RefAndTwoInt32Wrappers();
test.text = "adsf";
test.x.x = 0x11111111;
test.y.x = 0x22222222;
Console.ReadLine(); // <=== Breakpoint here
When the breakpoint hi...
Regex using javascript to return just numbers
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Here's another one with which you can even debugger regexp: Online regex tester and debugger.
Update:
Another one: RegExr.
Update:
Regexper and Regex Pal.
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Is there a WebSocket client implemented for Python? [closed]
...bsocket client implementation for Python as well as some good examples. I tested the following with a Tornado WebSocket server and it worked.
from twisted.internet import reactor
from autobahn.websocket import WebSocketClientFactory, WebSocketClientProtocol, connectWS
class EchoClientProtocol(We...