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What is the difference between the bridge pattern and the strategy pattern?
...UML
Strategy Pattern in Swift:
protocol PrintStrategy {
func print(_ string: String) -> String
}
class Printer {
let strategy: PrintStrategy
init(strategy: PrintStrategy) {
self.strategy = strategy
}
func print(_ string: String) -> String {
return self.strategy....
Javascript : natural sort of alphanumerical strings
...rue, sensitivity: 'base'})
For performance when sorting large numbers of strings, the article says:
When comparing large numbers of strings, such as in sorting large arrays, it is better to create an Intl.Collator object and use the function provided by its compare property. Docs link
v...
Authorize Attribute with Multiple Roles
...Attribute : AuthorizeAttribute
{
public AuthorizeRolesAttribute(params string[] roles) : base()
{
Roles = string.Join(",", roles);
}
}
Assuming your roles will be the same for multiple controllers, create a helper class:
public static class Role
{
public const string Admin...
How to get a enum value from string in C#?
...hoice;
// `value` is what you're looking for
} else { /* error: the string was not an enum member */ }
Before .NET 4.5, you had to do the following, which is more error-prone and throws an exception when an invalid string is passed:
(uint)Enum.Parse(typeof(baseKey), "HKEY_LOCAL_MACHINE")
...
Convert HH:MM:SS string to seconds only in javascript
...
Try this:
var hms = '02:04:33'; // your input string
var a = hms.split(':'); // split it at the colons
// minutes are worth 60 seconds. Hours are worth 60 minutes.
var seconds = (+a[0]) * 60 * 60 + (+a[1]) * 60 + (+a[2]);
console.log(seconds);
...
Convert string to symbol-able in ruby
...
Rails got ActiveSupport::CoreExtensions::String::Inflections module that provides such methods. They're all worth looking at. For your example:
'Book Author Title'.parameterize.underscore.to_sym # :book_author_title
...
How to escape apostrophe (') in MySql?
...a little bit more than you mention. It also says,
A “'” inside a string quoted with “'” may be written as “''”.
(Also, you linked to the MySQL 5.0 version of Table 8.1. Special Character Escape Sequences, and the current version is 5.6 — but the current Table 8.1. Special Char...
How to get names of enum entries?
...
enum Enum {
A
}
let nameOfA = Enum[Enum.A]; // "A"
Keep in mind that string enum members do not get a reverse mapping generated at all.
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How to Deserialize XML document
...he reader.ReadToEnd(); (that function reads the whole stream and returns a string, so the Deserialize() function couldn't use the reader anymore...the position was at the end of the stream). I also took a few liberties with the naming :).
Here are the classes:
[Serializable()]
public class Car
{
...
Using Python String Formatting with Lists
I construct a string s in Python 2.6.5 which will have a varying number of %s tokens, which match the number of entries in list x . I need to write out a formatted string. The following doesn't work, but indicates what I'm trying to do. In this example, there are three %s tokens and the list ...