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What is the purpose of Rank2Types?
...s. Take for example a plain old function of the following rank-1 type (to set the scene):
f :: ∀r.∀a.((a → r) → a → r) → r
To use f, the caller first must choose what types to use for r and a, then supply an argument of the resulting type. So you could pick r = Int and a = String:
...
How do I tell if a regular file does not exist in Bash?
...name - Check if file exists and is owned by effective group ID
-G filename set-group-id - True if file exists and is set-group-id
-k filename - Sticky bit
-L filename - Symbolic link
-O filename - True if file exists and is owned by the effective user id
-r filename - Check if file is a readable
-S ...
Recommended way to get hostname in Java
...me circumstances:
The IP address might not resolve into any name. Bad DNS setup, bad system setup or bad provider setup may be the reason for this.
A name in DNS can have many aliases called CNAMEs. These can only be resolved in one direction properly: name to address. The reverse direction is ambi...
read string from .resx file in C#
...he value of the
// localized resource using the caller's current culture setting.
String str = rm.GetString("welcome");
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How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...phabeticIDIndexDownload dl1 = new AlphabeticIDIndexDownload();
dl1.Settings.TopIndex = null;
Response<AlphabeticIDIndexResult> resp1 = dl1.Download();
writeStream.WriteLine("Id|Isin|Name|Exchange|Type|Industry");
foreach (var alphabeticalIndex in resp1.Result....
JavaScript curry: what are the practical applications?
... in JavaScript that uses closures:
function converter(toUnit, factor, offset, input) {
offset = offset || 0;
return [((offset + input) * factor).toFixed(2), toUnit].join(" ");
}
var milesToKm = converter.curry('km', 1.60936, undefined);
var poundsToKg = converter.curry('kg', 0.45460, unde...
WCF timeout exception detailed investigation
...
If you are using .Net client then you may not have set
//This says how many outgoing connection you can make to a single endpoint. Default Value is 2
System.Net.ServicePointManager.DefaultConnectionLimit = 200;
here is the original question and answer WCF Service Throttli...
What's the difference between a Future and a Promise?
..., and its javadoc explains:
A Future that may be explicitly completed (setting its value and status), and may be used as a CompletionStage, supporting dependent functions and actions that trigger upon its completion.
An example is also given on the list:
f.then((s -> aStringFunction(s))....
PHP ORMs: Doctrine vs. Propel
... things) I like the fact that everything has its own concrete getter & setter method. In Doctrine, this is not the case.
Propel:
$person->setName('Derek');
echo $person->getName();
Doctrine:
$person->name = 'Derek';
echo $person->name;
The reason I like having getters & se...
Is there a standard way to list names of Python modules in a package?
...:
raise ImportError('Not a package: %r', package_name)
# Use a set because some may be both source and compiled.
return set([os.path.splitext(module)[0]
for module in os.listdir(pathname)
if module.endswith(MODULE_EXTENSIONS)])
...