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How do I check if a number is a palindrome?
...this on an interview because the point would be to determine if you understand modulo.
– Robert Noack
Oct 29 '13 at 4:39
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Remove leading or trailing spaces in an entire column of data
... could try =TRIM(CLEAN(B1)) which will remove all non-printable characters and any leading/trailing spaces.
– hydrox467
Mar 6 '12 at 6:00
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Don't understand why UnboundLocalError occurs (closure) [duplicate]
...ariable, the global keyword will help. If increment() is a local function and counter a local variable, you can use nonlocal in Python 3.x.
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How to debug Apache mod_rewrite
...ite.log"
RewriteLogLevel 3
Since Apache httpd 2.4 mod_rewrite RewriteLog and RewriteLogLevel directives has been completely replaced by the new per-module logging configuration.
LogLevel alert rewrite:trace6
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Why should I prefer to use member initialization lists?
... this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A better way would be for B's constructor to directly call A's constructor in the initializer list:
B()
: a(3)
{
}
This would only call A's A(int) constructor and not its default constructo...
Test if a property is available on a dynamic variable
...trying to access it, unless you re-implemented the way dynamic binding is handled in the C# compiler. Which would probably include a lot of guessing, because it is implementation-defined, according to the C# specification.
So you should actually try to access the member and catch an exception, if i...
Floating View 扩展：悬浮视图扩展，将组件转换为悬浮窗口 · App Inventor 2 中文网
...求：需要在应用设置中授予悬浮窗权限
兼容性：不同 Android 版本的悬浮窗行为可能不同
内存管理：及时移除不需要的悬浮视图
用户体验：提供显示/隐藏悬浮窗的选项
性能优化建议
简洁设计：悬浮组...
OS X: equivalent of Linux's wget
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Also, wget is available via both MacPorts and Fink.
– Brian Clapper
Dec 31 '10 at 20:26
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Why do assignment statements return a value?
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To my understanding, assignment s = "Hello"; should only cause "Hello" to be assigned to s, but the operation shouldn’t return any value.
Your understanding is 100% incorrect. Can you explain why you believe this false thing?
What...
How to use Comparator in Java to sort
... things with your example class:
it's called People while it has a price and info (more something for objects, not people);
when naming a class as a plural of something, it suggests it is an abstraction of more than one thing.
Anyway, here's a demo of how to use a Comparator<T>:
public c...