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Interface type check with Typescript
... keyword as you can write custom type guards now:
interface A{
member:string;
}
function instanceOfA(object: any): object is A {
return 'member' in object;
}
var a:any={member:"foobar"};
if (instanceOfA(a)) {
alert(a.member);
}
Lots of Members
If you need to check a lot of members...
How to catch SQLServer timeout exceptions
...ntly. I know I could catch the SqlException and then check if the message string Contains "Timeout" but was wondering if there is a better way to do it?
...
Does Swift support reflection?
...y playground:
import Foundation
class PureSwiftClass {
}
var myvar0 = NSString() // Objective-C class
var myvar1 = PureSwiftClass()
var myvar2 = 42
var myvar3 = "Hans"
println( "TypeName0 = \(_stdlib_getTypeName(myvar0))")
println( "TypeName1 = \(_stdlib_getTypeName(myvar1))")
println( "TypeName...
Call a Server-side Method on a Resource in a RESTful Way
... I think you would URLencode the params not put it in the query string
– tacos_tacos_tacos
Jun 1 '13 at 22:46
...
Rails: convert UTC DateTime to another time zone
...eRecord::Migration
def change
add_column :textmessages, :time_zone, :string
end
end
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What's the nearest substitute for a function pointer in Java?
...
Anonymous inner class
Say you want to have a function passed in with a String param that returns an int.
First you have to define an interface with the function as its only member, if you can't reuse an existing one.
interface StringFunction {
int func(String param);
}
A method that takes...
Mark parameters as NOT nullable in C#/.NET?
...
An example of the desired feature:
public class Person
{
public string Name { get; set; } // Not Null
public string? Address { get; set; } // May be Null
}
The preview is available for Visual Studio 2017, 15.5.4+ preview.
...
How to call Stored Procedure in Entity Framework 6 (Code-First)?
... that looks like:
public class ResultForCampaign
{
public string AgeGroup { get; set; }
public string Gender { get; set; }
public decimal Payout { get; set; }
}
and then call the procedure by doing the following:
using(var context = new DatabaseContext()...
Access props inside quotes in React JSX
...
The string enclosed by backticks is a "template literal": developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Jon Schneider
Feb 15 '18 at 16:51
...
Capturing Groups From a Grep RegEx
... name="${BASH_REMATCH[1]}"
echo "${name}.jpg" # concatenate strings
name="${name}.jpg" # same thing stored in a variable
else
echo "$f doesn't match" >&2 # this could get noisy if there are a lot of non-matching files
fi
done
It's better to put the ...