大约有 45,000 项符合查询结果（耗时：0.0581秒） [XML]
How to get existing fragments when using FragmentPagerAdapter
I have problem making my fragments communicating with each other through the Activity , which is using the FragmentPagerAdapter , as a helper class that implements the management of tabs and all details of connecting a ViewPager with associated TabHost . I have implemented FragmentPagerAdapter...
Why do objects of the same class have access to each other's private data?
...
Because that's how it works in C++. In C++ access control works on per-class basis, not on per-object basis.
Access control in C++ is implemented as a static, compile-time feature. I think it is rather obvious that it is not really possible to...
Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
I'm building some SQL query in C#. It will differ depending on some conditions stored as variables in the code.
22 Answer...
How to delete a folder with files using Java
I want to create and delete a directory using Java, but it isn't working.
25 Answers
2...
Rails Model, View, Controller, and Helper: what goes where?
...
MVC
Controller: Put code here that has to do with working out what a user wants, and deciding what to give them, working out whether they are logged in, whether they should see certain data, etc. In the end, the controller looks at requests and works out what data (Model...
Why are trailing commas allowed in a list?
I am curious why in Python a trailing comma in a list is valid syntax, and it seems that Python simply ignores it:
5 Answer...
How to organize a node app that uses sequelize?
...
The short story
The trick in this case is not to initialize the model in the file but just to provide the necesary information for its initialization and let a centralized module take care of the models setup and instantiation.
So the steps are:
Have several Model files with...
What is scaffolding? Is it a term for a particular platform?
Scaffolding, what is it? Is it a Rails-only thing?
7 Answers
7
...
Set the maximum character length of a UITextField
How can I set the maximum amount of characters in a UITextField on the iPhone SDK when I load up a UIView ?
44 Answers
...
Validate decimal numbers in JavaScript - IsNumeric()
...
@Joel's answer is pretty close, but it will fail in the following cases:
// Whitespace strings:
IsNumeric(' ') == true;
IsNumeric('\t\t') == true;
IsNumeric('\n\r') == true;
// Number literals:
IsNumeric(-1) == false;
IsNumeric(0) == false;
IsNumeric(1....