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When should we use intern method of String on String literals
...is only (explicitly) done with Strings that are "generated" somehow, be it by internal manipulation or by retrieving from a database or such. With constants we don't have a choice.
– Carl Smotricz
Dec 6 '09 at 12:24
...
Default visibility for C# classes and members (fields, methods, etc.)?
...mbers and struct members, including nested classes and structs, is private by default.
...
interfaces default to internal access.
...
Delegates behave like classes and structs. By default, they have internal access when declared directly within a namespace, and private access when nested...
How do I get the Git commit count?
...l approach given in the original question) and incorrect: you can see this by inverting the match (git shortlog | grep -Ev '^[ ]+\w+') and seeing that e.g. commits with no message (i.e., "<none>") are not counted. Using git rev-list HEAD --count is both more succinct and more accurate.
...
what is the difference between a portlet and a servlet?
... components which use Java for
their implementation.
Portlets are managed by a portlet container just like servlet is
managed by servlet container.
Both static and dynamic content can be generated by Portlets and
Servlets.
The life cycle of portlets and servlets is controlled by the container
Th...
How do disable paging by swiping with finger in ViewPager but still be able to swipe programmaticall
I have ViewPager and below it I have 10 buttons. By clicking on button, for example #4, the pager goes immediately to page #4 by mPager.setCurrentItem(3); . But, I want to disable the paging by swiping with finger horizontally. Thus, the paging is done ONLY by clicking on the buttons.
So, how I ...
What exactly is a reentrant function?
...m;
void foo(callback f)
{
m.lock();
// use the resource protected by the mutex
if (f) {
f();
}
// use the resource protected by the mutex
m.unlock();
}
Another function could well need to lock the same mutex:
void bar()
{
foo(nullptr);
}
At first sight, ev...
How to merge two files line by line in Bash
I have two text files, each of them contains an information by line such like that
4 Answers
...
Find the Smallest Integer Not in a List
...ly and for every index write the value at the index to the index specified by value, recursively placing any value at that location to its place and throwing away values > N. Then go again through the array looking for the spot where value doesn't match the index - that's the smallest value not i...
jQuery templating engines [closed]
... is significantly then the library discussed in the linked articles. Both by Resig though, sure.
– Frank Schwieterman
Jul 25 '10 at 18:38
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What is the difference between persist() and merge() in JPA and Hibernate?
...flush operation.
If X is a
preexisting managed entity, it is
ignored by the persist operation.
However, the persist operation is
cascaded to entities referenced by X,
if the relationships from X to these
other entities are annotated with the
cascade=PERSIST or cascade=ALL
annotatio...