大约有 36,000 项符合查询结果（耗时：0.0449秒） [XML]
is node.js' console.log asynchronous?
...
102
Update: Starting with Node 0.6 this post is obsolete, since stdout is synchronous now.
Well le...
Django: Display Choice Value
...
answered Dec 1 '10 at 5:36
jMylesjMyles
9,74466 gold badges3737 silver badges5151 bronze badges
...
Deleting lines from one file which are in another file
...
answered Jan 24 '11 at 9:06
gabuzogabuzo
6,27833 gold badges2323 silver badges3535 bronze badges
...
Why use softmax as opposed to standard normalization?
...
170
There is one nice attribute of Softmax as compared with standard normalisation.
It react to lo...
Is it possible to figure out the parameter type and return type of a lambda?
..._traits implementation based on Specializing a template on a lambda in C++0x which can give the parameter types. The trick, as described in the answer in that question, is to use the decltype of the lambda's operator().
template <typename T>
struct function_traits
: public function_trai...
PHP regular expressions: No ending delimiter '^' found in
...
PHP regex strings need delimiters. Try:
$numpattern="/^([0-9]+)$/";
Also, note that you have a lower case o, not a zero. In addition, if you're just validating, you don't need the capturing group, and can simplify the regex to /^\d+$/.
Example: http://ideone.com/Ec3zh
See also:...
How to count items in a Go map?
...ed from the now-retired SO documentation:
m := map[string]int{}
len(m) // 0
m["foo"] = 1
len(m) // 1
If a variable points to a nil map, then len returns 0.
var m map[string]int
len(m) // 0
Excerpted from Maps - Counting map elements. The original author was Simone Carletti. Attribution det...
Booleans, conditional operators and autoboxing
...onditional expression is the result of applying capture conversion (§5.1.10) to lub(T1, T2) (§15.12.2.7).
S1 == <special null type> (see §4.1)
S2 == boolean
T1 == box(S1) == <special null type> (see last item in list of boxing conversions in §5.1.7)
T2 == box(S2) == `Boolean
lub(...
Matplotlib plots: removing axis, legends and white spaces
...
406
I think that the command axis('off') takes care of one of the problems more succinctly than cha...
How to find out element position in slice?
...
70
Sorry, there's no generic library function to do this. Go doesn't have a straight forward way of...