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What is a 'Closure'?
... scope
When you declare a local variable, that variable has a scope. Generally, local variables exist only within the block or function in which you declare them.
function() {
var a = 1;
console.log(a); // works
}
console.log(a); // fails
If I try to access a local variable, most languag...
Creating a copy of a database in PostgreSQL [closed]
...
Postgres allows the use of any existing database on the server as a template when creating a new database. I'm not sure whether pgAdmin gives you the option on the create database dialog but you should be able to execute the following...
ASP.NET MVC ambiguous action methods
I have two action methods that are conflicting. Basically, I want to be able to get to the same view using two different routes, either by an item's ID or by the item's name and its parent's (items can have the same name across different parents). A search term can be used to filter the list.
...
Clear back stack using fragments
...tBackStackEntryCount(); ++i) {
fm.popBackStack();
}
But could equally have used something like:
((AppCompatActivity)getContext()).getSupportFragmentManager().popBackStack(String name, FragmentManager.POP_BACK_STACK_INCLUSIVE)
Which will pop all states up to the named one. You can then j...
Can I catch multiple Java exceptions in the same catch clause?
...tch (IOException | SQLException ex) {
...
}
Remember, though, that if all the exceptions belong to the same class hierarchy, you can simply catch that base exception type.
Also note that you cannot catch both ExceptionA and ExceptionB in the same block if ExceptionB is inherited, either direct...
Acronyms in CamelCase [closed]
...n you use an abbreviation or acronym that is two characters long, put them all in caps;
When the acronym is longer than two chars, use a capital for the first character.
So, in your specific case, getUnescoProperties() is correct.
...
Remove characters from NSString?
...f the 'spaces' are well behaved ASCII value=32 (%20) characters. To remove ALL possible white-space chars use Jim Dovey's solution below.
– Linasses
Apr 28 at 11:23
add a comm...
Catch multiple exceptions at once?
...ore lines, try to imagine if you are dealing with file IO for example, and all you want to do is catch those exceptions and do some log messaging, but only those you expect coming from your file IO methods. Then you often have to deal with a larger number (about 5 or more) different types of excepti...
Declaring Multiple Variables in JavaScript
...ou're writing code that you expect to minify or pack later, the second way allows compressors (like the YUI Compressor) to give you a more minified version. If size is a consideration, then I would suggest following as many of JSLint's suggestions as possible.
– Lane
...
What is the difference between `git fetch origin` and `git remote update origin`?
...ports grouped remotes (remotes.<group> = <list>), and updating all remotes (except those with remote.<name>.skipDefaultUpdate set), but not any of the more specific options of fetch. Under the hood, though, it does the exact same thing as fetch with the default options.
The answe...