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Swift make method parameter mutable?
... Though not stated in other answers is the ability to declare an inout parameter. Think: passing in a pointer.
func reduceToZero(_ x: inout Int) {
while (x != 0) {
x = x-1
}
}
var a = 3
reduceToZero(&a)
print(a) // will print '0'
This can be particularly useful in recurs...
Execute JavaScript code stored as a string
How do I execute some JavaScript that is a string?
20 Answers
20
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Reading HTML content from a UIWebView
...ally easier to answer. Look at the stringWithContentsOfURL:encoding:error: method of NSString - it lets you pass in a URL as an instance of NSURL (which can easily be instantiated from NSString) and returns a string with the complete contents of the page at that URL. For example:
NSString *googleSt...
How can I make space between two buttons in same div?
...
Put them inside btn-toolbar or some other container, not btn-group. btn-group joins them together. More info on Bootstrap documentation.
Edit: The original question was for Bootstrap 2.x, but the same is still valid for Bootstrap 3 and Bootstrap 4.
In Boot...
Java: Static Class?
...ng an instance of it makes no semantic sense, but I still want to call its methods. What is the best way to deal with this? Static class? Abstract?
...
How to filter (key, value) with ng-repeat in AngularJs?
I am trying to do something like :
8 Answers
8
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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
... the tricky part is that you can't drop the foreign key using the column name, but instead you would have to find the name used to index it. To find that, issue the following select:
SHOW CREATE TABLE region;
This should show you the name of the index, something like this:
CONSTRAINT regio...
Insert all values of a table into another table in SQL
...trying to insert all values of one table into another. But the insert statement accepts values, but i would like it to accept a select * from the initial_Table. Is this possible?
...
NSPredicate: filtering objects by day of NSDate property
...del with an NSDate property. I want to filter the database by day. I assume the solution will involve an NSPredicate , but I'm not sure how to put it all together.
...
Age from birthdate in python
...h simpler considering that int(True) is 1 and int(False) is 0:
from datetime import date
def calculate_age(born):
today = date.today()
return today.year - born.year - ((today.month, today.day) < (born.month, born.day))
...