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What is the purpose of the reader monad?
...ls)) $ interp' t2
--I guess not that complicated!
Finally, we can use it by passing a trivial environment:
interp :: Term -> Value
interp term = runReader (interp' term) (Env [])
And that is it. A fully functional interpreter for the lambda calculus.
The other way to think about this is ...
When are you supposed to use escape instead of encodeURI / encodeURIComponent?
...," / ";" / "="
A percent sign is only allowed if it is directly followed by two hexdigits, percent followed by u is not allowed.
encodeURI()
Use encodeURI when you want a working URL. Make this call:
encodeURI("http://www.example.org/a file with spaces.html")
to get:
http://www.example.org/a...
How do you increase the max number of concurrent connections in Apache?
... an apache is started, it will start 2 child processes which is determined by StartServers parameter. Then each process will start 25 threads determined by ThreadsPerChild parameter so this means 2 process can service only 50 concurrent connections/clients i.e. 25x2=50. Now if more concurrent users ...
What are the rules for the “…” token in the context of variadic templates?
...peated — the unpacked patterns (call them expressions now) are separated by comma ,.
It can be best understood by some examples. Suppose you have this function template:
template<typename ...T> //pack
void f(T ... args) //pack
{
// here are unpack patterns
g( args... ); //...
Troubleshooting “Illegal mix of collations” error in mysql
...
This is generally caused by comparing two strings of incompatible collation or by attempting to select data of different collation into a combined column.
The clause COLLATE allows you to specify the collation used in the query.
For example, the fo...
What's the difference between Require.js and simply creating a element in the DOM? [closed]
...lity to load nested dependencies
ease of use for developer but then backed by an optimization tool that helps deployment
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Set cache-control for entire S3 bucket automatically (using bucket policies?)
...time.
Log in to AWS Management Console
Go into S3 bucket
Select all files by route
Choose "More" from the menu
Select "Change metadata"
In the "Key" field, select "Cache-Control" from the drop down menu
max-age=604800Enter (7 days) for Value
Press "Save" button
(thanks to @biplob - please give him...
Dots in URL causes 404 with ASP.NET mvc and IIS
...
I got this working by editing my site's HTTP handlers. For my needs this works well and resolves my issue.
I simply added a new HTTP handler that looks for specific path criteria. If the request matches it is correctly sent to .NET for proces...
Explanation of …
... implement templating functionality (like in PHP) but on the client side.
By setting the type to "text/template", it's not a script that the browser can understand, and so the browser will simply ignore it. This allows you to put anything in there, which can then be extracted later and used by a te...
ASP.NET Web API Authentication
... Authentication cookie along with the request. This cookie is usually sent by the server when authenticating (LogOn action) by calling the [FormsAuthentication.SetAuthCookie method (see MSDN).
So the client needs to perform 2 steps:
Send an HTTP request to a LogOn action by sending the username a...