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What's the opposite of chr() in Ruby?
...comment but add the [0]:
'A'.unpack('C')[0]
The unpack call returns an Array containing a single integer, which is not always accepted where an integer is wanted:
$ ruby -e 'printf("0x%02X\n", "A".unpack("C"))'
-e:1:in `printf': can't convert Array into Integer (TypeError)
from -e:1
$ ruby...
How to determine whether an object has a given property in JavaScript
.... It's just an alias for Object.prototype.hasOwnProperty.call(x, "y"). For arrays I think you might want Array.prototype.indexOf, _.indexOf, or _.contains
– nackjicholson
Nov 3 '13 at 22:13
...
A potentially dangerous Request.Path value was detected from the client (*)
...calling an .aspx page Web Method using an ajax method call, passing a JSON array object. The Web Page method signature contained an array of a strongly-typed .NET object, OrderDetails.
The Actual_Qty property was defined as an int, and the JSON object Actual_Qty property contained "4 " (extra space ...
Window.open and pass parameters by post method
...ucture you feed it: PHP automatically parses it and returns it as a nested array.
However, there is a single restriction: the brackets [ and ] must not be part of any key in the object (like {"this [key] is problematic" : "hello world"}). If someone knows how to escape it properly, please do tell!
...
Save classifier to disk in scikit-learn
...ib.dump and joblib.load which is much more efficient at handling numerical arrays than the default python pickler.
Joblib is included in scikit-learn:
>>> import joblib
>>> from sklearn.datasets import load_digits
>>> from sklearn.linear_model import SGDClassifier
>&...
What are C++ functors and their uses?
...u could pass a MultiplyBy object to an algorithm like std::transform:
int array[5] = {1, 2, 3, 4, 5};
std::transform(array, array + 5, array, MultiplyBy(3));
// Now, array is {3, 6, 9, 12, 15}
Another advantage of a functor over a pointer to a function is that the call can be inlined in more case...
How to generate a random number between a and b in Ruby?
...ubyinside.com/ruby-1-9-3-introduction-and-changes-5428.html
Converting to array may be too expensive, and it's unnecessary.
(a..b).to_a.sample
Or
[*a..b].sample
Array#sample
Standard in Ruby 1.8.7+.
Note: was named #choice in 1.8.7 and renamed in later versions.
But anyway, generating a...
Look up all descendants of a class in Ruby
...r modules. Also, YourRootClass will be included in the answer. You can use Array#- or another way to remove it.
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How to use LINQ to select object with minimum or maximum property value
...t. This solution's "slowness" depends on the underlying data. If this is a array or List<T>, then LINQ to Objects has no choice but to sort the entire collection first before selecting the first item. In this case it will be slower than the other solution suggested. However, if this is a LINQ ...
Which sort algorithm works best on mostly sorted data? [closed]
...rgesort" with "supernatural performance on many
kinds of partially ordered arrays (less than lg(N!) comparisons needed, and
as few as N-1)". Python's built-in sort() has used this algorithm for some time, apparently with good results. It's specifically designed to detect and take advantage of part...