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Mimicking sets in JavaScript?
I'm working in JavaScript. I'd like to store a list of unique , unordered string values, with the following properties:
7 ...
How to save an image to localStorage and display it on the next page?
...ith getElementByID, and save the image as a Base64. Then I save the Base64 string as my localStorage value.
bannerImage = document.getElementById('bannerImg');
imgData = getBase64Image(bannerImage);
localStorage.setItem("imgData", imgData);
Here is the function that converts the image to a Base64...
Mixing a PHP variable with a string literal
...an use braces to remove ambiguity when interpolating variables directly in strings.
Also, this doesn't work with single quotes. So:
echo '{$test}y';
will output
{$test}y
share
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improve this ...
Spring MVC: How to perform validation?
...lem/context better.
Let's have a User :
public class User {
private String name;
...
}
Method 1 : If you have Spring 3.x+ and simple validation to do, use javax.validation.constraints annotations (also known as JSR-303 annotations).
public class User {
@NotNull
private Strin...
JavaScript string encryption and decryption?
...TML = decrypted;
document.getElementById("demo3").innerHTML = decrypted.toString(CryptoJS.enc.Utf8);
Full working sample actually is:
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js" integrity="sha256-/H4YS+7aYb9kJ5OKhFYPUjSJdrtV6AeyJOtTkw6X72o=" crosso...
了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...过多种方式进行初始化，最常见的方式是使用 char* 或std::string 进行初始化，如清单 2 中所示。
清单 2. 创建 Boost path 对象的方法
path(); // empty path
path(const char* pathname);
path(const std::string& pathname);
path(const char* pathname, boost::f...
Is there any significant difference between using if/else and switch-case in C#?
... which is O(1).
C# (unlike many other languages) also allows to switch on string constants - and this works a bit differently. It's obviously not practical to build jump tables for strings of arbitrary lengths, so most often such switch will be compiled into stack of IFs.
But if number of conditi...
What is the difference between C# and .NET?
...om instance void [mscorlib]System.Reflection.AssemblyTitleAttribute::.ctor(string) = ( 01 00 0A 54 65 73 74 49 4C 44 41 53 4D 00 00 ) // ...TestILDASM..
.custom instance void [mscorlib]System.Reflection.AssemblyDescriptionAttribute::.ctor(string) = ( 01 00 00 00 00 )
.custom instance void [m...
Calling a Method From a String With the Method's Name in Ruby
...
Use this:
> a = "my_string"
> meth = a.method("size")
> meth.call() # call the size method
=> 9
Simple, right?
As for the global, I think the Ruby way would be to search it using the methods method.
...
Better way to cast object to int
...t conversion defined.
int.Parse()/int.TryParse() — For converting from a string of unknown format.
int.ParseExact()/int.TryParseExact() — For converting from a string in a specific format
Convert.ToInt32() — For converting an object of unknown type. It will use an explicit and implicit conve...