大约有 32,000 项符合查询结果（耗时：0.0378秒） [XML]
What is the benefit of zerofill in MySQL?
...r example you want all your invoice numbers to be displayed with 10 digits then you can declare the type of that column as INT(10) ZEROFILL.
– Mark Byers
Mar 10 '11 at 7:21
76
...
Plurality in user messages
...ter how small, that this app will need to be translated to other languages then both are wrong. The correct way of doing this is:
string message = ( noofitemsselected==1 ?
"You have selected " + noofitemsselected + " item. Are you sure you want to delete it?":
"You have selected " + noofitemsse...
Good reasons to prohibit inheritance in Java?
...class file is very small. If you are writing only for internal comsumption then a future coder can always remove the 'final' - you can think of it as a warning saying "this class was not designed with inheritance in mind".
s...
Check if object is file-like in Python
...works but I don't buy the Pythonic maxim that if it's hard to do in Python then it's wrong. Imagine you are passed an object and there are 10 different things you might do with that object depending on its type. You're not going to try each possibility and handle the error until you finally get it...
What is object serialization?
...stent storage or streamed across a communication link. The byte stream can then be deserialized - converted into a replica of the original object.
share
|
improve this answer
|
...
Build an iOS app without owning a mac? [closed]
...ng down the Shift key while pressing the Restart button in the start menu. Then you will get a blue screen with some options. Choose "Troubleshoot", then "Advanced options", then "UEFI Firmware Settings", then "Restart". Then your computer will restart and open the BIOS directly. On older versions o...
What is the command to list the available avdnames
...ck if the emulator command exists first
if ! type emulator > /dev/null; then
echo "emulator command not found"
exit 1
fi
# Gather emulators that exist on this computer
DEVICES=( $(emulator -list-avds 2>&1 ) )
# Display list of emulators
echo "Available Emulators
---------------------...
How to pass a function as a parameter in Java? [duplicate]
...rface MyInterface {
String doSomething(int param1, String param2);
}
then anywhere where MyInterface is used, you can substitute a lambda expression:
class MyClass {
public MyInterface myInterface = (p1, p2) -> { return p2 + p1; };
}
For example, you can create a new thread very quic...
What is the main difference between Inheritance and Polymorphism?
... 'class' derives from an existing 'class'. So if you have a Person class, then you have a Student class that extends Person, Student inherits all the things that Person has. There are some details around the access modifiers you put on the fields/methods in Person, but that's the basic idea. For ...
Check whether user has a Chrome extension installed
...e innerHTML to the version number of your extension or something. You can then read the contents of that client-side.
Again though, you should use a direct method if there is one available.
EDIT: Direct method found!!
Use the connection methods found here: https://developer.chrome.com/extensi...