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How do I do base64 encoding on iOS?
I'd like to do base64 encoding and decoding, but I could not find any support from the iPhone SDK . How can I do base64 encoding and decoding with or without a library?
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How to convert an image to base64 encoding?
Can you please guide me how can I convert an image from a URL to base64 encoding?
9 Answers
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How to concatenate two numbers in javascript?
...ut strings, right? Yes there is.
For any two numbers, a and b, with any base B. We are going to multiply a by base B to the power of length b (using log base of b then flooring it to get the nearest whole number then adding 1 to it) then adding b.
So now our code looks like this:
a * Math.p...
C++虚继承的概念 - C/C++ - 清泛网 - 专注C/C++及内核技术
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8: #include <iostream>
9: using namespace std;
10:
11: //Base
12: class Base
13: {
14: public:
15: Base(){cout << "Base called..."<< endl;}
16: void print(){cout << "Base print..." <<endl;}
17: private:
18: };
19:
20: //Sub
21: class Sub //...
File Hash 扩展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希 ·...
... File Hash 扩展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希
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What is an idiomatic way of representing enums in Go?
I'm trying to represent a simplified chromosome, which consists of N bases, each of which can only be one of {A, C, T, G} .
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How to save a PNG image server-side, from a base64 data string
...o convert 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.
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Passing base64 encoded strings in URL
Is it safe to pass raw base64 encoded strings via GET parameters?
10 Answers
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Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
3 Answers
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Binary Data in JSON String. Something better than Base64
...ed as UTF-8). With that in mind, I think the best you can do space-wise is base85 which represents four bytes as five characters. However, this is only a 7% improvement over base64, it's more expensive to compute, and implementations are less common than for base64 so it's probably not a win.
You c...