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Most efficient way to check for DBNull and then assign to a variable?
...sks again what OP wants to avoid. By writing row.IsNull(columnName) you're reading it once already and reading it again. Not saying that will make a difference, but theoretically it can be less efficient..
– nawfal
Feb 6 '13 at 16:31
...
Should it be “Arrange-Assert-Act-Assert”?
...sanity check, to ensure that the second assertion is really meaningful.
Read by itself, assertTrue(range.includes(7)); is saying: "assert that the modified range includes 7". Read in the context of the first assertion, it's saying: "assert that invoking encompass() causes it to include 7. And s...
How to add property to a class dynamically?
...a class, and classes are themselves instances of type! In fact, trying to read Foo.b still calls property.__get__; it's just idiomatic for descriptors to return themselves when accessed as class attributes.
I think it's pretty cool that virtually all of Python's OO system can be expressed in Pytho...
Function overloading by return type?
...e system, and so you can write code like the following:
main = do n <- readLn
print (sqrt n) -- note that this is aligned below the n, if you care to run this
This code reads a floating point number from standard input, and prints its square root. But what is surprising about this? ...
How do I get a plist as a Dictionary in Swift?
...
In swift 3.0 Reading from Plist.
func readPropertyList() {
var propertyListFormat = PropertyListSerialization.PropertyListFormat.xml //Format of the Property List.
var plistData: [String: AnyObject] = [:] //Our data
...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...用到libeasy内置的工作线程池。libeasy采用one event loop per thread的模式，即每个线程一个event loop，
内存资源每连接自管理，连接之间的资源互不干涉。每个连接(easy_connection_t)上有可以有多个消息(easy_message_t)，通过链表连起来，每...
How to merge every two lines into one from the command line?
...
so - mean stdin, so paste - - mean read from stdin, then read from stdin, you can stack as many of them as you want I expect.
– ThorSummoner
Dec 8 '16 at 0:12
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What are the differences between ArrayList and Vector?
...is no specific requirement to use Vectors.
Synchronization
If multiple threads access an ArrayList concurrently then we must externally synchronize the block of code which modifies the list either structurally or simply modifies an element. Structural modification means addition or deletion of ele...
What's the difference between an inverted index and a plain old index?
...ere is absolutely no difference between them.
For the benefit of future readers, I will now provide several "forward" and "inverted" index examples:
Example 1: Web search
If you're thinking that the inverse of an index is something like the inverse of a function in mathematics, where the invers...