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Reading Excel files from C#
...looked it up on MSDN. Looks like the <T> is just used to attempt to cast the contents in the column to a type. In this example and just casting the data in the columns to strings. If you wanted a double you would need to call double.Parse(x.Field<string>("Cost") or something like that...
Doing HTTP requests FROM Laravel to an external API
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We can use package Guzzle in Laravel, it is a PHP HTTP client to send HTTP requests.
You can install Guzzle through composer
composer require guzzlehttp/guzzle:~6.0
Or you can specify Guzzle as a dependency in your project's existing composer.json
{
"require": {
...
How do I set a column value to NULL in SQL Server Management Studio?
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Use This:
Update Table Set Column = CAST(NULL As Column Type) where Condition
Like This:
Update News Set Title = CAST(NULL As nvarchar(100)) Where ID = 50
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How do I convert an interval into a number of hours with postgres?
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And maybe floor or cast the result to integer if the interval contains minutes and/or seconds
– rasjani
Jun 4 '09 at 19:25
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How can I use a carriage return in a HTML tooltip?
... @Tarquin They don't work in HTML, they just work specifically in PHP's double quotes because that's a feature of PHP's double quotes.
– Brilliand
May 26 '15 at 19:11
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How to initialize/instantiate a custom UIView class with a XIB file in Swift
... the return type is Self rather than UIView, so the caller doesn't need to cast to the view class.
import UIKit
protocol UIViewLoading {}
extension UIView : UIViewLoading {}
extension UIViewLoading where Self : UIView {
// note that this method returns an instance of type `Self`, rather than U...
OOP vs Functional Programming vs Procedural [closed]
..., but I really can't see the big difference between it and procedural C or PHP, could you give some example?
– Leonel
Apr 1 '12 at 2:39
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AngularJS - Any way for $http.post to send request parameters instead of JSON?
...ht be a bit of a hack, but I avoided the issue and converted the json into PHP's POST array on the server side:
$_POST = json_decode(file_get_contents('php://input'), true);
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How can I pass a member function where a free function is expected?
...n using a void* interface as they remove the potential for errors due to a cast to the wrong type.
To clarify how to use a function pointer to call a member function, here is an example:
// the function using the function pointers:
void somefunction(void (*fptr)(void*, int, int), void* context) {
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Oracle Differences between NVL and Coalesce
...you can find a difference in the fact that NVL makes an implicit data type casting if the given values are of different types. So for instance, I was getting an error using COALESCE passing it two NULL values (one explicitly set and the other taken from a column in the database, of type NUMBER), tha...