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What is the argument for printf that formats a long?
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647
Put an l (lowercased letter L) directly before the specifier.
unsigned long n;
long m;
pri...
Where Is Machine.Config?
...32-bit
%windir%\Microsoft.NET\Framework\[version]\config\machine.config
64-bit
%windir%\Microsoft.NET\Framework64\[version]\config\machine.config
[version] should be equal to v1.0.3705, v1.1.4322, v2.0.50727 or v4.0.30319.
v3.0 and v3.5 just contain additional assemblies to v2.0.50727 so the...
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...
Stack Overflow：StackExchange网络不同主题网站的”祖父“ - 更多技术 - ...
...了这些问题，促进他们作出改变。
问：几周前库茨和一位微软必应高管发生了争执，后者指责谷歌借搜索引擎作弊者牟利，你觉得这种说法有道理吗？
答：确实有很多作弊网站以谷歌Adsense广告作为唯一的盈利方式，不过指责...
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...
泡在Stack Overflow答题30天 - 创意 - 清泛网 - 专注C/C++及内核技术
...不知道他们甚至有个专属用词，直到某天有个用户斥责一位问题提问者为“求助吸血鬼”我才知道。
我就曾经为几个看起来像“求助吸血鬼”的用户回答过问题，接着就一发不可收拾了。他们通常采纳了我的答案接着在再答案...
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...