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byte[] to hex string [duplicate]
... @Grungondola: That is most likely the reason for the bad performance. If you use += in a loop it works well for very short loops, but it scales very badly. Each additional iteration roughly doubles the execution time, so at about 20 iterations you have a performance issue. Every addit...
Detach many subdirectories into a new, separate Git repository
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Could you add some more information explaining what this lengthy command is doing?
– Burhan Ali
Sep 18 '18 at 10:26
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How to 'bulk update' with Django?
...e it won't be triggered).
No django signals will be emitted.
You can't perform an .update() on a sliced QuerySet, it must be on an original QuerySet so you'll need to lean on the .filter() and .exclude() methods.
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PHP shell_exec() vs exec()
...ot what you want, as you'll need to post-process the input into some other form, so in that case use shell_exec.
It's also worth pointing out that shell_exec is an alias for the backtic operator, for those used to *nix.
$out = `ls`;
var_dump($out);
exec also supports an additional parameter that...
Static/Dynamic vs Strong/Weak
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Static/Dynamic Typing is about when type information is acquired (Either at compile time or at runtime)
Strong/Weak Typing is about how strictly types are distinguished (e.g. whether the language tries to do an implicit conversion from strings to numbers).
See the w...
What is a Proxy in Doctrine 2?
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UPDATE
This answer contains wrong information about differences between proxy objects and partial objects. See @Kontrollfreak's answer for more details: https://stackoverflow.com/a/17787070/252591
Proxy objects are used whenever your query doesn't return al...
Can (domain name) subdomains have an underscore “_” in it?
...bel for labels used in hostnames and says:
This is the classical label form used, albeit with some additional restrictions, in hostnames (RFC 952). Its syntax is identical to that described as the "preferred name syntax" in Section 3.5 of RFC 1034 as modified by RFC 1123. Briefly, it is a strin...
Haskell testing workflow
...ck properties all from one harness.
Code coverage is built into GHC in the form of the HPC tool.
Criterion provides some pretty great benchmarking machinery
I'll use as a running example a package that I just started enabling with unit testing, code coverage, and benchmarks:
http://github.com/ekm...
Proper Linq where clauses
...aximum). Basically it's worth considering readability before any slight performance difference.
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How to play with Control.Monad.Writer in haskell?
...ate the MonadWriter type class at all? The reason is to do with monad transformers. As you correctly realised, the simplest way to implement Writer is as a newtype wrapper on top of a pair:
newtype Writer w a = Writer { runWriter :: (a,w) }
You can declare a monad instance for this, and then writ...