大约有 41,000 项符合查询结果（耗时：0.0411秒） [XML]
Seeking clarification on apparent contradictions regarding weakly typed languages
I think I understand strong typing , but every time I look for examples for what is weak typing I end up finding examples of programming languages that simply coerce/convert types automatically.
...
Single script to run in both Windows batch and Linux Bash?
...rite a single script file which executes in both Windows (treated as .bat) and Linux (via Bash)?
11 Answers
...
Are static variables shared between threads?
...y the JVM's memory model. Here's an article talking about the memory model and how writes become visible to threads. You can't count on changes one thread makes becoming visible to other threads in a timely manner (actually the JVM has no obligation to make those changes visible to you at all, in an...
Why doesn't .NET/C# optimize for tail-call recursion?
...ugh analysis to keep the application competitive in the long term with a standard ahead-of-time compilation.
Interestingly the NGen compilation steps are not targeted to being more aggressive in their optimizations. I suspect this is because they simply don't want to have bugs where the behaviour i...
Is there a difference between “==” and “is”?
...> b == a
True
# Make a new copy of list `a` via the slice operator,
# and assign it to variable `b`
>>> b = a[:]
>>> b is a
False
>>> b == a
True
In your case, the second test only works because Python caches small integer objects, which is an implementation detail...
Android Min SDK Version vs. Target SDK Version
When it comes to developing applications for Android, what is the difference between Min and Target SDK version? Eclipse won't let me create a new project unless Min and Target versions are the same!
...
How to install Xcode Command Line Tools
How do I get the command-line build tools installed with the current Xcode/Mac OS X v10.8 (Mountain Lion) or later?
13 Answ...
Maintain/Save/Restore scroll position when returning to a ListView
...
Try this:
// save index and top position
int index = mList.getFirstVisiblePosition();
View v = mList.getChildAt(0);
int top = (v == null) ? 0 : (v.getTop() - mList.getPaddingTop());
// ...
// restore index and position
mList.setSelectionFromTop(in...
Rails migration for has_and_belongs_to_many join table
...ow do I do a script/generate migration to create a join table for a has_and_belongs_to_many relationship?
6 Answers
...
What does enctype='multipart/form-data' mean?
What does enctype='multipart/form-data' mean in an HTML form and when should we use it?
9 Answers
...