大约有 47,000 项符合查询结果（耗时：0.0566秒） [XML]
Integer division: How do you produce a double?
... int to double is a widening primitive conversion.
You can get rid of the extra pair of parentheses by casting the denominator instead of the numerator:
double d = num / (double) denom;
share
|
i...
printf with std::string?
My understanding is that string is a member of the std namespace, so why does the following occur?
7 Answers
...
When do items in HTML5 local storage expire?
...ebsite is around 10mb, but an average site wont store much more than a few strings, so I wouldnt mind about storage space
– Juan
Feb 23 '16 at 13:38
1
...
Convert a Scala list to a tuple?
...cala> val hlist = "z" :: 6 :: "b" :: true :: HNil
hlist: shapeless.::[String,shapeless.::[Int,shapeless.::[String,shapeless.::[Boolean,shapeless.HNil]]]] = z :: 6 :: b :: true :: HNil
scala> val tup = hlist.tupled
tup: (String, Int, String, Boolean) = (z,6,b,true)
scala> tup
res0: (St...
How to log a method's execution time exactly in milliseconds?
...rtTime = NSDate()
func TICK(){ startTime = NSDate() }
func TOCK(function: String = __FUNCTION__, file: String = __FILE__, line: Int = __LINE__){
println("\(function) Time: \(startTime.timeIntervalSinceNow)\nLine:\(line) File: \(file)")
}
you can now just call anywhere
TICK()
// your code to b...
is vs typeof
... +1: In the past I wondered why the C# compiler didn't compile typeof(string).TypeHandle to the ldtoken CIL instruction, but it looks like the CLR takes care of it in the JIT. It still takes a few extra opcodes but it's a more generalized application of the optimization.
–...
Git Diff with Beyond Compare
...
I don't use extra wrapper .sh files. My environment is Windows XP, git 1.7.1 on cygwin, and Beyond Compare 3. Following is my .git/config file.
[diff]
tool = bc3
[difftool]
prompt = false
[difftool "bc3"]
#use cygpath to tra...
Str_replace for multiple items
...se str_replace to replace one character like this: str_replace(':', ' ', $string); but I want to replace all the following characters \/:*?"<>| , without doing a str_replace for each.
...
Better way to check variable for null or empty string?
...tion (present and neither empty nor only white space
function IsNullOrEmptyString($str){
return (!isset($str) || trim($str) === '');
}
share
|
improve this answer
|
foll...
Which is the fastest algorithm to find prime numbers?
... that gain is usually more than offset by the increased complexity and the extra constant factor overhead of this computational complexity such that for practical applications the SoE is better.
– GordonBGood
Mar 20 '14 at 2:53
...