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Linq order by boolean
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Just wanted to do this and it seems like something with no implicit ordering. I did the following to be more explicit:
Something.OrderBy(e=>e.SomeFlag ? 0 : 1)
to sort something true to false.
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In where shall I use isset() and !empty()
... This can be dangerous. Instead, use basic >, < and == operators and convert variables using intval() or floatval().
– kaleazy
Feb 14 at 18:08
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How to get the current date and time
... From Date doc: As of JDK 1.1, the Calendar class should be used to convert between dates and time fields and the DateFormat class should be used to format and parse date strings.
– Paolo M
Aug 7 '13 at 14:06
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C# Passing Function as Argument [duplicate]
...s mentioned above works but there are also delegates that do the same task and also define intent within the naming:
public delegate double MyFunction(double x);
public double Diff(double x, MyFunction f)
{
double h = 0.0000001;
return (f(x + h) - f(x)) / h;
}
public double MyFunctionMet...
Difference between await and ContinueWith
Can someone explain if await and ContinueWith are synonymous or not in the following example. I'm trying to use TPL for the first time and have been reading all the documentation, but don't understand the difference.
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Finding differences between elements of a list
...cess is a method call in python
numpy.diff is slow because it has to first convert the list to a ndarray. Obviously if you start with an ndarray it will be much faster:
In [22]: arr = np.array(L)
In [23]: %timeit np.diff(arr)
100 loops, best of 3: 3.02 ms per loop
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How to get start and end of day in Javascript?
...1:49:00.304Z" *
* it is applicable for Instant time type on Java8 which convert your local time automatically depending on your region.(if you are planning write global app)
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All Ruby tests raising: undefined method `authenticate' for nil:NilClass
...a Rails 3 application. It could be experiencing a few growing pains as it converts over.
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Android XML Percent Symbol
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The resource file is converted into a Java resource, and in doing so, the % character returns. I'm afraid this doesn't resolve the problem.
– Paul Lammertsma
Mar 28 '14 at 13:17
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Is there a use-case for singletons with database access in PHP?
...ou had used a singleton. A singleton is an iffy pattern in itself, but it converts fairly easily to an intelligent factory pattern--can even be converted to use dependency injection without too much trouble. For instance, if your singleton is gotten through getInstance(), you can pretty easily cha...