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What is data oriented design?
...ntities in your mental model of the problem. Since data is lumped together based on data usage, you won't always have sensible names to give your classes in Data Oriented Design.
Relation to relational databases
The thinking behind Data Oriented Design is very similar to how you think about relati...
Generating random strings with T-SQL
...is to compute @dice = rand(@seed) * len(@specials)+1 to make the indexes 1 based.
– Remus Rusanu
Feb 17 '16 at 13:42
T...
How can I make the computer beep in C#?
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I just tested in Win 7 x64 RC, and although the internal speaker didn't beep, there was a beep through speakers when I had them plugged in and on. I guess it's just the internal (mobo) speaker that won't beep. Thanks for the info @Lck.
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Best practices around generating OAuth tokens?
...ns without any record on host.
So we changed it to store everything in database and the token is simply an random number used as the key to the database. It has an username index so it's easy to list all the tokens for an user and revoke it.
We get quite few hacking activities. With random number, w...
R memory management / cannot allocate vector of size n Mb
...eate the object you need in one session.
If the above cannot help, get a 64-bit machine with as much RAM as you can afford, and install 64-bit R.
If you cannot do that there are many online services for remote computing.
If you cannot do that the memory-mapping tools like package ff (or bigmem...
When to use enumerateObjectsUsingBlock vs. for
...he representation for fast enumeration. There is overhead therein. Block-based enumeration allows the collection class to enumerate contents as quickly as the fastest traversal of the native storage format. Likely irrelevant for arrays, but it can be a huge difference for dictionaries.
"Don't use...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...打开，则导出前必须先调用 关闭数据库 方法，否则导出失败、报错。
导出的文件是一个完整的 SQLite 数据库。
如果导入成功，则返回 真，否则返回 假。
ImportDatabase(fileName)
导入一个 SQLite 数据库文件，完全替换当前已关闭...
“/usr/bin/ld: cannot find -lz”
...lib1g-dev did not fix it. Installing lib32z1-dev got me past it. I have a 64 bit system and it seems like it wanted the 32 bit library.
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How to find the installed pandas version
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to validate an e-mail address in swift?
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let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
let emailPred = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
return emailPred.evaluate(with: email)
}
for versions of Swift earlier than 3.0:
func isValidEmail(email: String) -> Bool {
let emailRe...