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Why was the switch statement designed to need a break?
... Java probably didn't want to break habits and spread confusion. For a different behavior, they would have to use different semantics. Java designers lost a number of opportunities to break from C, anyway.
– PhiLho
Oct 31 '08 at 6:30
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difference between primary key and unique key
...cannot be NULL - e.g. MySQL adds NOT NULL
Primary Key is a unique key identifier of the record
Unique Key:
Can be more than one unique key in one table
Unique key can have NULL values
It can be a candidate key
Unique key can be NULL ; multiple rows can have NULL values and therefore may not be c...
What is the difference between Normalize.css and Reset CSS?
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I work on normalize.css.
The main differences are:
Normalize.css preserves useful defaults rather than "unstyling" everything. For example, elements like sup or sub "just work" after including normalize.css (and are actually made more robust) whereas they ar...
What are paramorphisms?
...of the input and gives just the output value. It's not very efficient, but if you're interested in sheer expressivity, para gives you no more than foldr. If you use this foldr-encoded version of para, then safeTail will take linear time after all, copying the tail element by element.
So, that's it:...
Android: create a popup that has multiple selection options
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Hello, can you also show how I can set actions for specific item selections? Example: I want to let the user change the app language by clicking one of those items (probably using if statement).
– Arda Çebi
Feb 7 '18 at 20:11
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What are the use(s) for tags in Go?
In the Go Language Specification , it mentions a brief overview of tags:
3 Answers
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AngularJS directive with default options
...default options for my (element) directive, which can be overridden by specifying the option value in an attribute.
3 Answe...
Search for all files in project containing the text 'querystring' in Eclipse
...le Search" tab.
additional search options
search for resources: Ctrl + Shift + R
search for Java types: Ctrl + Shift + T
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What is process.env.PORT in Node.js?
....PORT || 3000 means: whatever is in the environment variable PORT, or 3000 if there's nothing there.
So you pass that app.listen, or to app.set('port', ...), and that makes your server be able to accept a parameter from the environment what port to listen on.
If you pass 3000 hard-coded to app.lis...
How to change variables value while debugging with LLDB in Xcode?
...alue while debugging in XCode? ). Does LLDB offer a similar functionality? If so, how can we use it?
3 Answers
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