Component architectures are an important part of ever modern front-end framework. In this article, I’m going to dissect Polymer, React, Rio.js, Vue.js, Aurelia and Angular 2 components. The goal is to make the commonalities between each solution obvious. Hopefully, this will convince you that learning one or the other isn’t all that complex, given that everyone has somewhat settled on a component architecture.
/// <summary>
/// Insert values from an object into a string pattern. To specify the object's property you have to use the '{propertyName}'.
/// </summary>
/// <remarks>
/// This method is a replacement to String.Format, but it has two differences:
/// <list type="simple">
/// <item>It reverese the order you call the functionality, instead of writing String.Format(pattern, args) you write pattern.FillByObject(args). This makes the code look cleaner.</item>
/// <item>You supply the pattern with an object and specify insertion points by property names.</item>
/// </list>
/// <example>
/// <![CDATA[
/// "First name:{firstName}, Sur name:{Surname}".FillByObject(new {firstName = "Sam", lastName="Naseri"});
/// ]]>
/// </example>
/// </remarks>
/// <seealso cref="Fill"/>
/// <typeparam name="T">Type of bindingValue.</typeparam>
/// <param name="bindingPattern">The pattern to fill.</param>
/// <param name="bindingValue">The object providing values to fill in the pattern.</param>
/// <returns>The pattern filled with values.</returns>
public static string FillByObject<T>(this string bindingPattern, T bindingValue)
{
var properties = GetProperties(typeof(T)).ToList();
var values = properties.Select(property => property.GetValue(bindingValue, new object[] { })).ToList();
var result = bindingPattern;
for (int index = 0; index < properties.Count; index++)
{
var property = properties[index];
var propPattern = "{" + property.Name + "}";
var old = result;
result = result.Replace(propPattern, values[index] != null ? values[index].ToString() : "");
}
return result;
}private static IEnumerable<PropertyInfo> GetProperties(Type t)
{
return t.GetProperties(BindingFlags.Public | BindingFlags.Instance);
}/// <summary>
/// A simple replacement for String.Format which only makes the codes look nicer.
/// </summary>
/// <param name="pattern">The source string that you want to replace insertion points on it.</param>
/// <param name="args">Values to be replaced in the pattern.</param>
/// <returns></returns>
public static string Fill(this string pattern, params object[] args)
{
return string.Format(pattern, args);
}Security and cryptography | Exercises in .NET with Andras Nemes
How to build a .NET Core Project with VS Code ?
با استفاده از Destructuring assignments میتوانید خصوصیات را از آرایهها یا اشیاء، با هر میزان عمقی استخراج کنید.
someObject = { a: 'value for a', b: 'value for b' }
{ a, b } = someObject
console.log "a is '#{a}', b is '#{b}'" var a, b, someObject;
someObject = {
a: 'value for a',
b: 'value for b'
};
a = someObject.a, b = someObject.b;
console.log("a is '" + a + "', b is '" + b + "'"); {join, resolve} = require('path')
join('/Users', 'Vahid') استفاده از کتابخانههای خارجی دقیقا مانند فراخوانی توابع CoffeeScript است. در پایان نوشتن کدهای CoffeeScript، همه به جاوااسکریپت تبدیل میشوند:
# Use local alias
$ = jQuery
$ ->
# DOMContentLoaded
$(".el").click ->
alert("Clicked!") var $;
$ = jQuery;
$(function() {
return $(".el").click(function() {
return alert("Clicked!");
});
}); # Execute function immediately
type = do ->
classToType = {}
for name in "Boolean Number String Function Array Date RegExp Undefined Null".split(" ")
classToType["[object " + name + "]"] = name.toLowerCase()
# Return a function
(obj) ->
strType = Object::toString.call(obj)
classToType[strType] or "object" var type;
type = (function() {
var classToType, i, len, name, ref;
classToType = {};
ref = "Boolean Number String Function Array Date RegExp Undefined Null".split(" ");
for (i = 0, len = ref.length; i < len; i++) {
name = ref[i];
classToType["[object " + name + "]"] = name.toLowerCase();
}
return function(obj) {
var strType;
strType = Object.prototype.toString.call(obj);
return classToType[strType] || "object";
};
})(); A DbContext instance represents a combination of the Unit Of Work and Repository patterns such that
it can be used to query from a database and group together changes that will then be written back to
the store as a unit. DbContext is conceptually similar to ObjectContext.
This was a very quick run down of some of the options available to you to prevent mass assignment. Which approach you take is up to you, though I would definitely suggest using one of the latter 2-model approaches. There are other options too, such as doing explicit binding via TryUpdateModelAsync<> but the options I've shown represent some of the most common approaches. Whatever you do, don't just blindly bind your view models if you have properties that should not be edited by a user, or you could be in for a nasty surprise.
And whatever you do, don't bind directly to your EntityFramework models. Pretty please.
LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.
