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Simple (non-secure) hash function for JavaScript? [duplicate]
...ing that, when passed a string as input, produces something similar to the 32 character hexadecimal string that's the typical output of MD5, SHA1, etc. It doesn't have to be cryptographically secure, just reasonably resistant to collisions. (My initial use case is URLs, but I'll probably want to u...
AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
...类型变量进行交换。
MQTT拓展中的字节数组的处理方式就是这种，直接转换成byte[]：
@SimpleFunction(description = "Publishes a binary array.")
public void PublishByteArray(String Topic, Object ByteArray, boolean RetainFlag, int QoS) {
&nb...
C++ preprocessor __VA_ARGS__ number of arguments
...9,_20, \
_21,_22,_23,_24,_25,_26,_27,_28,_29,_30, \
_31,_32,_33,_34,_35,_36,_37,_38,_39,_40, \
_41,_42,_43,_44,_45,_46,_47,_48,_49,_50, \
_51,_52,_53,_54,_55,_56,_57,_58,_59,_60, \
_61,_62,_63,N,...) N
#define PP_RSEQ_N() \
63,62,61,60, ...
converting a base 64 string to an image and saving it
...with image.Save(...).
public Image LoadImage()
{
//data:image/gif;base64,
//this image is a single pixel (black)
byte[] bytes = Convert.FromBase64String("R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw==");
Image image;
using (MemoryStream ms = new MemoryStream(bytes...
How to save a PNG image server-side, from a base64 data string
...nvert 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.
...
C/C++中退出线程的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...数，线程将自行撤消（最好不使用该方法）。
剩下两种是在程序设计中一定要避免的：
3、同一个进程或另一个进程中的线程调用TerminateThread函数（应避免使用该方法）。
4、ExitProcess和TerminateProcess函数也可以用来终止线程...
How can I find the current OS in Python? [duplicate]
...is on sparc gave:
Python version: ['2.6.4 (r264:75706, Aug 4 2010, 16:53:32) [C]']
dist: ('', '', '')
linux_distribution: ('', '', '')
system: SunOS
machine: sun4u
platform: SunOS-5.9-sun4u-sparc-32bit-ELF
uname: ('SunOS', 'xxx', '5.9', 'Generic_122300-60', 'sun4u', 'sparc')
version: Generic_12230...
Generate an integer that is not among four billion given ones
...
Assuming that "integer" means 32 bits: 10 MB of space is more than enough for you to count how many numbers there are in the input file with any given 16-bit prefix, for all possible 16-bit prefixes in one pass through the input file. At least one of the ...
Why do we use Base64?
...
Your first mistake is thinking that ASCII encoding and Base64 encoding are interchangeable. They are not. They are used for different purposes.
When you encode text in ASCII, you start with a text string and convert it to a sequence of bytes.
When you encode data in Base64, you sta...
Converting Secret Key into a String and Vice Versa
...
You can convert the SecretKey to a byte array (byte[]), then Base64 encode that to a String. To convert back to a SecretKey, Base64 decode the String and use it in a SecretKeySpec to rebuild your original SecretKey.
For Java 8
SecretKey to String:
// create new key
SecretKey secretKey ...