大约有 22,000 项符合查询结果（耗时：0.0315秒） [XML]
How to make a chain of function decorators?
...udes the function functools.wraps(), which copies the name, module, and docstring of the decorated function to its wrapper.
(Fun fact: functools.wraps() is a decorator! ☺)
# For debugging, the stacktrace prints you the function __name__
def foo():
print("foo")
print(foo.__name__)
#outputs:...
What is InputStream & Output Stream? Why and when do we use them?
...
More than one character is String also. What differentiates stream from string?
– Prajeet Shrestha
May 24 '18 at 5:07
...
In Scala how do I remove duplicates from a list?
...ok at the ScalaDoc for Seq,
scala> dirty.distinct
res0: List[java.lang.String] = List(a, b, c)
Update. Others have suggested using Set rather than List. That's fine, but be aware that by default, the Set interface doesn't preserve element order. You may want to use a Set implementation that ex...
Migration: Cannot add foreign key constraint
...;
$table->integer('user_id')->unsigned();
$table->string('priority_name');
$table->smallInteger('rank');
$table->text('class');
$table->timestamps('timecreated');
});
Schema::table('priorities', function($table) {
$table->fo...
How to Disable landscape mode in Android?
...or example:
<activity android:name=".SomeActivity"
android:label="@string/app_name"
android:screenOrientation="portrait" />
EDIT: Since this has become a super-popular answer, I feel very guilty as forcing portrait is rarely the right solution to the problems it's frequently applied...
Google Gson - deserialize list object? (generic type)
...is to use an array as a type, e.g.:
MyClass[] mcArray = gson.fromJson(jsonString, MyClass[].class);
This way you avoid all the hassle with the Type object, and if you really need a list you can always convert the array to a list by:
List<MyClass> mcList = Arrays.asList(mcArray);
IMHO thi...
Setting PayPal return URL and making it auto return?
...--------------------------------------------------------------
$product_id_string = $_POST['custom'];
$product_id_string = rtrim($product_id_string, ","); // remove last comma
// Explode the string, make it an array, then query all the prices out, add them up, and make sure they match the payment_gr...
On showing dialog i get “Can not perform this action after onSaveInstanceState”
...logFragment {
@Override
public void show(FragmentManager manager, String tag) {
try {
FragmentTransaction ft = manager.beginTransaction();
ft.add(this, tag);
ft.commit();
} catch (IllegalStateException e) {
Log.d("ABSDIALOGFRAG...
Python Regex instantly replace groups
...
Have a look at re.sub:
result = re.sub(r"(\d.*?)\s(\d.*?)", r"\1 \2", string1)
This is Python's regex substitution (replace) function. The replacement string can be filled with so-called backreferences (backslash, group number) which are replaced with what was matched by the groups. Groups ar...
How do I get LaTeX to hyphenate a word that contains a dash?
...This is great, but is yields a hyperref warning when I use it in a chapter string: Package hyperref Warning: Token not allowed in a PDF string. There, the other proposed solution (\def\hyph{-\penalty0\hskip0pt\relax}) works.
– Dr. Jan-Philip Gehrcke
Aug 26 '14 ...