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How to install Java SDK on CentOS?
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164
The following command will return a list of all packages directly related to Java. They will be...
Hash function that produces short hashes?
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@erasmospunk: encoding with base64 does nothing for collision resistance, since if hash(a) collides with hash(b) then base64(hash(a)) also collides with base64(hash(b)).
– Greg Hewgill
Nov 12 '13 at 18:37
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Why do x86-64 systems have only a 48 bit virtual address space?
...facturers took a shortcut. They use an instruction set which allows a full 64-bit address space, but current CPUs just only use the lower 48 bits. The alternative was wasting transistors on handling a bigger address space which wasn't going to be needed for many years.
So once we get near the 48-bi...
Best way to create unique token in Rails?
...ken
self.token = loop do
random_token = SecureRandom.urlsafe_base64(nil, false)
break random_token unless ModelName.exists?(token: random_token)
end
end
end
Edit:
@kain suggested, and I agreed, to replace begin...end..while with loop do...break unless...end in this answer b...
App Inventor 2 Encrypt.Security 安全性扩展：MD5哈希，SHA/AES/RSA/BASE6...
...D5哈希，SHA1和SHA256哈希，AES加密/解密，RSA加密/解密，BASE64编码/解码方法。权限此扩展程序不需要任何权限。事件OnErrorOccured抛出任何异常时将触发此事件。此事件中有两个变量：method和message。变量“method”是发生错误的方法的...
Android Studio installation on Windows 7 fails, no JDK found
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+1 This MOSTLY worked for me. I am running 64 bit windows and JDK 1.7.0. I tried adding both JDK_HOME and JAVA_HOME with "c:\Program Files\Java\jdk1.7.0\". It still would not load. However, I capitalized the "C" and removed the trailing slash and it works now: "C:\Pr...
Openssl is not recognized as an internal or external command
...bin\openssl.exe" sha1 -binary | "C:\Users\abc\openssl\bin\openssl.exe" base64
Remember, path that you will enter will be the path where you have installed the openssl...hope this helps..:-)
Edit:
you can download openssl for windows 32 and 64 bit from the respective links below:
OpenSSL for 64 Bits...
Ternary operator is twice as slow as an if-else block?
...er this question, we'll examine the assembly code produced by the X86 and X64 JITs for each of these cases.
X86, if/then
32: foreach (int i in array)
0000007c 33 D2 xor edx,edx
0000007e 83 7E 04 00 cmp dword ptr [esi+4],0
00000082 7E 1C...
JavaScript % (modulo) gives a negative result for negative numbers
According to Google Calculator (-13) % 64 is 51 .
11 Answers
11
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Drawing an SVG file on a HTML5 canvas
...on to comment on the @Matyas answer, but if the svg's image is also in base64, it will be drawed to the output.
Demo:
var svg = document.querySelector('svg');
var img = document.querySelector('img');
var canvas = document.querySelector('canvas');
// get svg data
var xml = new XMLSerializ...