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What are free monads?
...ome time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of category theory.)
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Edit and Continue: “Changes are not allowed when…”
... a clean WinForms project, Edit and Continue doesn't work and gives me the error:
36 Answers
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PHP exec() vs system() vs passthru()
...n status"). Zero usually means it was successful, other values are usually error codes.
Other misc things to be aware of:
The shell_exec() and the backticks operator do the same thing.
There are also proc_open() and popen() which allow you to interactively read/write streams with an executing co...
Where can I find my Facebook application id and secret key?
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After Use this App Id my application i am getting error like "You are not logged in".
– SANDEEP
Dec 19 '16 at 9:34
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Where is Erlang used and why? [closed]
...ken live with full access to any process' running state. Also the built-in error reporting tools are very useful (but sometimes somewhat awkward to use).
Of course I could talk about its functional roots but this aspect is somewhat orthogonal to the main goal (high availability). The main compone...
Determine project root from a running node.js application
...the directory doesn't contain your application then it should exit with an error prompting the user to create the variable. It could be set as a part of an install process.
You can read environment variables in node with something like process.env.MY_ENV_VARIABLE.
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Detach many subdirectories into a new, separate Git repository
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hm. even with extglob turned on I'm getting an error near my parenthesis: syntax error near unexpected token `(' my command looks like: git filter-branch -f --index-filter "git rm -r -f --cached --ignore-unmatch src/css/themes/!(some_theme*)" --prune-empty -- --all an ...
Can git operate in “silent mode”?
... The purpose is to remove informational messages, but still display errors. I haven't studied how well-behaved is git concerning what goes to stdout and what goes to stderr, but redirecting both smells like a very bad idea.
– Johan Boulé
Apr 18 '19 at 1...
What's the strangest corner case you've seen in C# or .NET? [closed]
...es called rounding to nearest, or banker's rounding. It minimizes rounding errors that result from consistently rounding a midpoint value in a single direction.
– ICR
Oct 12 '08 at 12:25
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Django: multiple models in one template using forms [closed]
...his since 'and' short circuits and we want to check to whole page for form errors
if a_valid and b_valid and c_valid:
a = formA.save()
b = formB.save(commit=False)
c = formC.save(commit=False)
b.foreignkeytoA = a
b.save()
c.foreignkeytoB = b
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