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LINQ - Left Join, Group By, and Count
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.Count() will generate COUNT(*) which will count all the rows in that group, by the way.
– Mehrdad Afshari
Mar 29 '09 at 22:47
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JSON Stringify changes time of date because of UTC
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thanks... I actually found a great library here, blog.stevenlevithan.com/archives/date-time-format all you need to do this (maybe it will help you) , you pass false and it doesn't convert. var something = dateFormat(myStartDate, "isoDateTi...
How to check for the type of a template parameter?
...::is_same<T, animal>::value) { /* ... */ } // optimizable...
}
Usually, that's a totally unworkable design, though, and you really want to specialize:
template <typename T> void foo() { /* generic implementation */ }
template <> void foo<animal>() { /* specific for T ...
Algorithm to generate all possible permutations of a list?
...n! possible ways to order these elements. What is an algorithm to generate all possible orderings of this list? Example, I have list [a, b, c]. The algorithm would return [[a, b, c], [a, c, b,], [b, a, c], [b, c, a], [c, a, b], [c, b, a]].
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What's the difference between IQueryable and IEnumerable
...;>), which can be thought of as "is the 'Age' property > 18".
This allows things like LINQ-to-SQL to exist because they can parse the expression tree and convert it into equivalent SQL. And because the provider doesn't need to execute until the IQueryable is enumerated (it implements IEnum...
Printing Lists as Tabular Data
...l for building data-centric CLI tools. That, combined with click (pip install click), and you've got a real stew going.
– alexbw
Nov 23 '14 at 20:53
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Programmatic equivalent of default(Type)
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Why not call the method that returns default(T) with reflection ? You can use GetDefault of any type with:
public object GetDefault(Type t)
{
return this.GetType().GetMethod("GetDefaultGeneric").MakeGenericMethod(t).I...
PHP convert XML to JSON
...passed, and various version fixes, but on PHP 5.6.30, this method produces ALL of the data. Attributes are stored in the array under the @attributes key, so it works absolutely flawlessly, and beautifully. 3 short lines of code solve my problem beautifully.
– AlexanderMP
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How to download image from url
...d content is not a known image type.
Check this reference on MSDN to find all format available.
Here are reference to WebClient and Bitmap.
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How to lock orientation during runtime
Is there a way to lock orientation during runtime? For example I'd like to allow the user to lock the screen to landscape if the user currently in landscape and toggle the menu option.
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