大约有 30,000 项符合查询结果（耗时：0.0454秒） [XML]
Email Address Validation in Android on EditText [duplicate]
...Message);
final TextView textView = (TextView)findViewById(R.id.text);
String email = emailValidate.getText().toString().trim();
String emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+";
emailValidate .addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
...
Linq to SQL how to do “where [column] in (list of values)”
... @JonSkeet Isn't that case sensitive? If codeIDs is list of uppercase strings and codeData.codeId is a lowercase string, it'll fail.
– PersyJack
May 31 '17 at 20:03
...
Android 4.3 menu item showAsAction=“always” ignored
...">
<item android:id="@+id/menu_add_size"
android:title="@string/menu_add_item"
android:orderInCategory="10"
[yourapp]:showAsAction="always"
android:icon="@android:drawable/ic_menu_add" />
</menu>
Replace [yourapp] with your app name or any namespa...
Eclipse copy/paste entire line keyboard shortcut
... @user1278890 Sure, that might be considered both inconvenience or extra advantage :) Thanks for your feedback!
– beam022
Nov 24 '16 at 9:57
...
What's the difference between Spring Data's MongoTemplate and MongoRepository?
... changes.
Example: given a document like this: { _id: "ID1", field1: "a string", field2: 10.0 } and two different threads concurrently updating it...
With MongoTemplate it would look somewhat like this:
THREAD_001 THREAD_002
| ...
store and retrieve a class object in shared preference
...e solution is to transform the pojo into ByteArrayOutPutStream and save as String in the SharedPreferences
– rallat
Jun 6 '12 at 15:22
27
...
Flask vs webapp2 for Google App Engine
..., webapp2 has a big chance to be included in a future SDK release (this is extra-official, don't quote me :-) which will push it forward and bring new developers and contributions.
That said, I'm a big fan of Werkzeug and the Pocoo guys and borrowed a lot from Flask and others (web.py, Tornado), bu...
How to “test” NoneType in python?
...r is not None.
Original Answer:
The simplest way however, without the extra line in addition to cardamom's answer is probably:
isinstance(x, type(None))
So how can I question a variable that is a NoneType? I need to use if method
Using isinstance() does not require an is within the if-s...
An App ID with Identifier '' is not available. Please enter a different string
I am trying to add a new APP ID to prepare for App Store submission and got the following error under the bundle ID I provided.
...
How do I REALLY reset the Visual Studio window layout?
I had a plugin installed in Visual Studio 2008, and it created some extra dockable windows. I have uninstalled it, and I can't get rid of the windows it created - I close them, but they always come back. They're just empty windows now, since the plugin is no longer present, but nothing I've tried ...