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How do I concatenate strings in Swift?
... do:
var c = "Hello"
c += ", World"
I'm sure there are more ways too.
Bit of description
let creates a constant. (sort of like an NSString). You can't change its value once you have set it. You can still add it to other things and create new variables though.
var creates a variable. (sort of l...
How to import a single table in to mysql database using command line
... using command line, but now my pain area is how to import a single table with its data to the existing database using command line.
...
What do querySelectorAll and getElementsBy* methods return?
... other getElementsBy* methods return an array-like collection of elements. Iterate over it like you would with a real array:
var elems = document.getElementsByClassName('myElement');
for(var i = 0; i < elems.length; i++) {
elems[i].style.size = '100px';
}
If you prefer something shorter, c...
Why is enum class preferred over plain enum?
...ses - enumerator names are local to the enum and their values do not implicitly convert to other types (like another enum or int)
Plain enums - where enumerator names are in the same scope as the enum and their
values implicitly convert to integers and other types
Example:
enum Color { red, green...
How do I convert a String to an int in Java?
..., you can use an Ints method from the Guava library, which in combination with Java 8's Optional, makes for a powerful and concise way to convert a string into an int:
import com.google.common.primitives.Ints;
int foo = Optional.ofNullable(myString)
.map(Ints::tryParse)
.orElse(0)
...
Origin is not allowed by Access-Control-Allow-Origin
...trol-Allow-Origin * setting in the Apache configuration or htaccess file.
It should be noted that this effectively disables CORS protection, which very likely exposes your users to attack. If you don't know that you specifically need to use a wildcard, you should not use it, and instead you should ...
What does the plus sign do in '+new Date'
...
that's the + unary operator, it's equivalent to:
function(){ return Number(new Date); }
see:
http://xkr.us/articles/javascript/unary-add/
and in MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Una...
How to search for a string in text files?
I want to check if a string is in a text file. If it is, do X. If it's not, do Y. However, this code always returns True for some reason. Can anyone see what is wrong?
...
Pass array to ajax request in $.ajax() [duplicate]
... yes...that worked..thanks..one more thing can be done ...that is initialize info = {}; then data: info,
– Poonam Bhatt
Jan 18 '12 at 4:45
2
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Making a UITableView scroll when text field is selected
...d error, I'm giving up and asking the question. I've seen a lot of people with similar problems but can't get all the answers to work right.
...