大约有 40,000 项符合查询结果（耗时：0.0355秒） [XML]
iterating over and removing from a map [duplicate]
...g> map = new HashMap<String, String>() {
{
put("test", "test123");
put("test2", "test456");
}
};
for(Iterator<Map.Entry<String, String>> it = map.entrySet().iterator(); it.hasNext(); ) {
Map.Entry<String, String> entry = it.next();
if(entry.getKey().eq...
How to measure elapsed time in Python?
...
123
(For performance measurement, time.clock() is actually preferred, since it can't be interfered with if the system clock gets messed with, ...
How do you check if a certain index exists in a table?
...
AdaTheDevAdaTheDev
123k2424 gold badges179179 silver badges181181 bronze badges
...
Return number of rows affected by UPDATE statements
...
AdaTheDevAdaTheDev
123k2424 gold badges179179 silver badges181181 bronze badges
...
msbuild.exe staying open, locking files
...
123
Use msbuild with /nr:false.
Briefly: MSBuild tries to do lots of things to be fast, especia...
How does one reorder columns in a data frame?
...n of this function to my personal package.
– CoderGuy123
Jul 6 '16 at 12:12
1
This is really usef...
jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)
...TheVillageIdiotTheVillageIdiot
37.3k1919 gold badges123123 silver badges180180 bronze badges
5
...
decimal vs double! - Which one should I use and when? [duplicate]
...ut at 1 million for a float.
A 15 digit monetary value:
£1,234,567,890,123.45
9 trillion with a double. But with division and comparisons it's more complicated (I'm definitely no expert in floating point and irrational numbers - see Marc's point). Mixing decimals and doubles causes issues:
...
Where and why do I have to put the “template” and “typename” keywords?
...}; /* (C) --> */ f_tmpl<X> ();
struct Y { static int const foo = 123; }; /* (D) --> */ f_tmpl<Y> ();
The two different scenarios:
If we instantiate the function-template with type X, as in (C), we will have a declaration of a pointer-to int named x, but;
if we instantiate the ...
How to test multiple variables against a value?
...
123
I wouldn't be so quick to go for the set version. Tuple's are very cheap to create and iterate over. On my machine at least, tuples are ...