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Is a Python dictionary an example of a hash table?
...;>> b = ['some', 'list']
>>> hash(b)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: list objects are unhashable
>>> a[b] = 'some'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: l...
When should I mock?
...s within tests.
A mock replaces that dependency. You set expectations on calls to the dependent object, set the exact return values it should give you to perform the test you want, and/or what exceptions to throw so that you can test your exception handling code. In this way you can test the unit...
How can I profile Python code line-by-line?
...ump_stats("/tmp/profiler_stats.txt")
toggle profiling asynchronously from call stack (requires a way to trigger this code in considered application, for example a signal handler or an available worker thread) by using statistical profiling:
import pprofile
profiler = pprofile.StatisticalProfile()
...
Store a closure as a variable in Swift
...
var completionHandler: ((Float)->Void)?
Now the property is automatically initialized to nil ("no value").
In Swift you would use optional binding to check of a the
completion handler has a value
if let handler = completionHandler {
handler(result)
}
or optional chaining:
completionHa...
What are these attributes: `aria-labelledby` and `aria-hidden`
...ities.
To be precise for your question, here is what your attributes are called as ARIA attribute states and model
aria-labelledby: Identifies the element (or elements) that labels the current element.
aria-hidden (state): Indicates that the element and all of its descendants are not vis...
What is the meaning of “POSIX”?
...
No, the standard is at an API level -- each specified call can be implemented in the kernel, or in the C library in terms of another call, and that's just fine for Posix (and for your programs too;-). MacOSX is Posix compliant, see devworld.apple.com/leopard/overview/osfoundatio...
Maven artifact and groupId naming
...t have any modules, just simple projects. In fact, we don't have a project called "awesome inhouse framework" :)
– Noarth
Sep 16 '10 at 12:11
11
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Razor MVC Populating Javascript array with Model Array
... Gald it works - Yes otherwise it will look for a C# object called myArray.
– heymega
May 21 '14 at 11:11
1
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Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
I recently created a simple application for testing the HTTP call throughput that can be generated in an asynchronous manner vs a classical multithreaded approach.
...
How to sum a variable by group
...te. In my case I like aggregate because it works over many columns automatically.
– QAsena
Jun 24 at 20:32
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