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SQL SELECT speed int vs varchar
...context or experimental results - doesn't really answer the question. Everyone knows that varchars are allowed to take much more space than ints, but they do NOT have to.
– Marcin Wojnarski
Apr 5 '19 at 12:08
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Using C# reflection to call a constructor
...ormance enhancement when calling the same constructor many times), but for one-off use Activator would be easier.
– Ben Voigt
Jul 15 '10 at 13:04
3
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Futures vs. Promises
... std::cout << future.get();
});
producer.join();
consumer.join();
One (incomplete) way to implement std::async using std::promise could be:
template<typename F>
auto async(F&& func) -> std::future<decltype(func())>
{
typedef decltype(func()) result_type;
aut...
Is there a method to generate a UUID with go language
...are not all valid values for a UUID. As far as I can tell, this should be done for all the values in the slice though.
If you are on linux, you can alternatively call /usr/bin/uuidgen.
package main
import (
"fmt"
"log"
"os/exec"
)
func main() {
out, err := exec.Command("uuidgen")...
Database Structure for Tree Data Structure
...ject, which is a good reference from a general SQL perspective (it is mentioned in the nested set article link above).
Also, Itzik Ben-Gann has a good overview of the most common options in his book "Inside Microsoft SQL Server 2005: T-SQL Querying".
The main things to consider when choosing a mod...
Python decorators in classes
Can one write something like:
11 Answers
11
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How to create a HashMap with two keys (Key-Pair, Value)?
...ala where you have tuples and case classes (replacing whole Key class with one-liner).
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ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
...exception is thrown during POSTing wrapper model and changing the state of one entry to 'Modified'. Before changing the state, the state is set to 'Detached' but calling Attach() does throw the same error. I'm using EF6.
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How can I override the OnBeforeUnload dialog and replace it with my own?
...hing you can do about the box in some circumstances, you can intercept someone clicking on a link. For me, this was worth the effort for most scenarios and as a fallback, I've left the unload event.
I've used Boxy instead of the standard jQuery Dialog, it is available here: http://onehackoranother....
What is the difference between the bridge pattern and the strategy pattern?
...ces to be swaped). In other words Bridge creates standardized interface on one side and plugs implementations with different interfaces on the other.
– Nikaas
Feb 17 '18 at 18:17
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