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How to save a PNG image server-side, from a base64 data string
...rt canvas drawings to PNG images.
What I need now is to turn those base64 strings that this tool generates, into actual PNG files on the server, using PHP.
...
Kotlin: how to pass a function as parameter to another?
...
Use :: to signify a function reference, and then:
fun foo(m: String, bar: (m: String) -> Unit) {
bar(m)
}
// my function to pass into the other
fun buz(m: String) {
println("another message: $m")
}
// someone passing buz into foo
fun something() {
foo("hi", ::buz)
}
...
How do you bind an Enum to a DropDownList control in ASP.NET?
...s and getNames return the same, the first like objects and the second like string. The definition of the enum is like this: public enum eResult { Right = 1, NoncontrolledError = 2,}
– Javiere
Jun 26 '13 at 11:27
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How do you perform a CROSS JOIN with LINQ to SQL?
...
The same thing with linq extension methods:
var names = new string[] { "Ana", "Raz", "John" };
var numbers = new int[] { 1, 2, 3 };
var newList=names.SelectMany(
x => numbers,
(y, z) => { return y + z + " test "; });
foreach (var item in newList)
{
Console.WriteLine(...
How to reference constants in EL?
...n EL 2.2 and older. There are several alternatives:
Put them in a Map<String, Object> which you put in the application scope. In EL, map values are accessible the usual Javabean way by ${map.key} or ${map['key.with.dots']}.
Use <un:useConstants> of the Unstandard taglib (maven2 repo he...
Capture Stored Procedure print output in .NET
...myConnection_InfoMessage(object sender, SqlInfoMessageEventArgs e)
{
myStringBuilderDefinedAsClassVariable.AppendLine(e.Message);
}
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(this == null) in C#!
...{
// Methods
public Derived()
{
base..ctor(new Func<string>(Program.Derived.<.ctor>b__0));
return;
}
[CompilerGenerated]
private static string <.ctor>b__0()
{
string CS$1$0000;
CS$1$0000 = CS$1$0000.CheckNull();
Label...
.NET Process.Start default directory?
...EMROOT%\system32.
You can determine the value of %SYSTEMROOT% by using:
string _systemRoot = Environment.GetEnvironmentVariable("SYSTEMROOT");
Here is some sample code that opens Notepad.exe with a working directory of %ProgramFiles%:
...
using System.Diagnostics;
...
ProcessStartInfo _proc...
Correct way to find max in an Array in Swift
...ement type inside your sequence conforms to Comparable protocol (may it be String, Float, Character or one of your custom class or struct), you will be able to use max() that has the following declaration:
@warn_unqualified_access func max() -> Element?
Returns the maximum element in the se...
What is the difference between memmove and memcpy?
... location pointed by the destination. (http://www.cplusplus.com/reference/cstring/memcpy/)
Consider the following examples:
#include <stdio.h>
#include <string.h>
int main (void)
{
char string [] = "stackoverflow";
char *first, *second;
first = string;
second = string...