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Java SafeVarargs annotation, does a standard or best practice exist?
...nts go here)... }.
This works well when the varargs type is concrete like String.... When it's a type variable like T..., it also works when T is known to be a concrete type for that call. e.g. if the method above were part of a class Foo<T>, and you have a Foo<String> reference, then c...
What is global::?
...cted static global::Foo bar = new global::Foo();
static void Main(string[] args)
{
bar.baz(); // would write Foo 1 to console as it refers to global scope
Foo qux = new Foo();
qux.baz(); // would write Foo 2 to the console as it refers to the Demo...
Why do C++ libraries and frameworks never use smart pointers?
...
I agree with you, even passing a std::string can be a pain, This says a lot about C++ as a "great language for libraries".
– Ha11owed
Apr 27 '12 at 5:56
...
完美解决phpcms批量移动内容后，新闻心情、评论排行等不更新的问题 - 更多...
... $tree->init($categorys);
$string .= $tree->get_tree(0, $str);
$str = "<option value='\$catid'>\$spacer \$catname</option>";
$source_string = '';
$tree->init($categorys);
...
What is reflection and why is it useful?
... name and the compiler won't complain about it (because say you use just a String for the class name). Then, at run time, if that class is not present you get an exception. You kind of bypassed the compiler in this case. Would you give me some specific use case for this? I just can't picture when i ...
using jquery $.ajax to call a PHP function
...oth .end() and .data return data to variables
var strLenA = P.strlen('some string').end();
var strLenB = P.strlen('another string').end();
var totalStrLen = strLenA + strLenB;
console.log( totalStrLen ); // 25
// .data Returns data in an array
var data1 = P.crypt("Some Crypt String").data();
consol...
Can pandas automatically recognize dates?
...most flexible way possible.
Suppose you have a column 'datetime' with your string, then:
from datetime import datetime
dateparse = lambda x: datetime.strptime(x, '%Y-%m-%d %H:%M:%S')
df = pd.read_csv(infile, parse_dates=['datetime'], date_parser=dateparse)
This way you can even combine multiple co...
Access parent URL from iframe
...his doesn't seem to work with Edge browser - the referrer will be an empty string.. stackoverflow.com/questions/24169219/…
– Davide Orazio Montersino
May 23 '17 at 9:59
...
NullPointerException in Java with no StackTrace
...expect. The logger API actually takes Object as the first argument, not a string - and then it calls toString() on the argument. So instead of getting the nice pretty stack trace, it just prints out the toString - which in the case of NPE is pretty useless.
Perhaps this is what you're experiencin...
Using Default Arguments in a Function
... {
// single parameter, of object type SOMETHING
} else if (is_string($params)) {
// single argument given as string
} else if (is_array($params)) {
// params could be an array of properties like array('x' => 'x1', 'y' => 'y1')
} else if (func_num_args() == ...