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Rails: How to get the model class name based on the controller class name?
...
190
This will do it:
class HouseBuyersController < ApplicationController
def index
@model...
How to cancel a Task in await?
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Read up on Cancellation (which was introduced in .NET 4.0 and is largely unchanged since then) and the Task-Based Asynchronous Pattern, which provides guidelines on how to use CancellationToken with async methods.
To summarize, you pass a CancellationToken into each method that s...
R data formats: RData, Rda, Rds etc
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KenMKenM
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What's a standard way to do a no-op in python?
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Use pass for no-op:
if x == 0:
pass
else:
print "x not equal 0"
And here's another example:
def f():
pass
Or:
class c:
pass
share
|
impr...
C++ SFINAE examples?
...t(...);
public:
enum { Yes = sizeof(IsClassT<T>::test<T>(0)) == 1 };
enum { No = !Yes };
};
When IsClassT<int>::Yes is evaluated, 0 cannot be converted to int int::* because int is not a class, so it can't have a member pointer. If SFINAE didn't exist, then you would ge...
Enums and Constants. Which to use when?
...rom here as I'm lazy)
[FlagsAttribute]
enum DistributedChannel
{
None = 0,
Transacted = 1,
Queued = 2,
Encrypted = 4,
Persisted = 16,
FaultTolerant = Transacted | Queued | Persisted
}
Constants should be for a single value, like PI. There isn't a range of PI values, there is just PI.
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Iterate over object keys in node.js
...matter.
var async = {};
async.forEach = function(o, cb) {
var counter = 0,
keys = Object.keys(o),
len = keys.length;
var next = function() {
if (counter < len) cb(o[keys[counter++]], next);
};
next();
};
async.forEach(obj, function(val, next) {
// do things
setTimeout(ne...
Why does Math.floor return a double?
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80
According to the same Javadoc:
If the argument is NaN or an infinity or positive zero or negati...
What is the maximum number of characters that nvarchar(MAX) will hold?
...re detailed numbers, you should be able to store
(2 ^ 31 - 1 - 2) / 2 = 1'073'741'822 double-byte characters
1 billion, 73 million, 741 thousand and 822 characters to be precise
in your NVARCHAR(MAX) column (unfortunately, that last half character is wasted...)
Update: as @MartinMulder pointed ...
Omitting the first line from any Linux command output
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answered Sep 6 '11 at 10:37
Fredrik PihlFredrik Pihl
39.4k55 gold badges7070 silver badges119119 bronze badges
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