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What is a singleton in C#?
...dBalancer
{
private static LoadBalancer _instance;
private List<string> _servers = new List<string>();
private Random _random = new Random();
private static object syncLock = new object();
private LoadBalancer()
{
_servers.Add("ServerI");
_server...
HTML encoding issues - “” character showing up instead of “ ”
...ould seem to be a proper HTML parser involved somewhere if your &nbsp; strings are (correctly) being turned into U+00A0 NON-BREAKING SPACE characters. If so, you could just process your template natively in the DOM, and ask it to serialise using the ASCII encoding to keep non-ASCII characters as...
Simpler way to create dictionary of separate variables?
I would like to be able to get the name of a variable as a string but I don't know if Python has that much introspection capabilities. Something like:
...
PHP: How to use array_filter() to filter array keys?
...ainst the key, e.g. $allowed could contain regex patterns instead of plain strings.
You can also use ARRAY_FILTER_USE_BOTH to have both the value and the key passed to your filter function. Here's a contrived example based upon the first, but note that I'd not recommend encoding filtering rules usi...
Range references instead values
... code becomes:
package main
import "fmt"
type MyType struct {
field string
}
func main() {
var array [10]MyType
for idx, _ := range array {
array[idx].field = "foo"
}
for _, e := range array {
fmt.Println(e.field)
fmt.Println("--")
}
}
...
HTML text input allow only numeric input
...n of this.
function setInputFilter(textbox: Element, inputFilter: (value: string) => boolean): void {
["input", "keydown", "keyup", "mousedown", "mouseup", "select", "contextmenu", "drop"].forEach(function(event) {
textbox.addEventListener(event, function(this: (HTMLInputElement | HT...
Installation error: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED?
...uld be another reason for this error. The attribute
android:taskAffinity="string"
Should always start with a dot, like:
android:taskAffinity=".string"
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What to gitignore from the .idea folder?
...rashlytics plugin (for Android Studio and IntelliJ)
com_crashlytics_export_strings.xml
crashlytics.properties
crashlytics-build.properties
fabric.properties
### Intellij Patch ###
# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
# *.iml
# modules.xml
...
Why do we need virtual functions in C++?
... virtual modifier on/off to see what happens
//virtual
std::string Says() { return "?"; }
};
class Dog: public Animal
{
public: std::string Says() { return "Woof"; }
};
void test()
{
Dog* d = new Dog();
Animal* a = d; // refer to Dog instance with Animal pointer
...
C# naming convention for constants?
...++ Standard Tempate Library has adopted lower case for constants e.g. std::string::npos (cplusplus.com/reference/string/string/npos). So ALL_CAPS is only for macros and preprocessor directives- which makes it look even more stupider in C#.
– Richard Dingwall
No...