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How to create a protocol with methods that are optional?
...tTitle;
if ([self.dataSource respondsToSelector:@selector(titleForSegmentAtIndex:)]) {
thisSegmentTitle = [self.dataSource titleForSegmentAtIndex:index];
}
The respondsToSelector: method uses a selector, which refers to the identifier for a method after compilation. You can provide the correct...
Where is nodejs log file?
...pp.log,
" to the respective app.log created by you.
After this go to your index.js and include the following code in it.
const morgan = require('morgan');
const winston = require('./winston/config');
const express = require('express');
const app = express();
app.use(morgan('combined', { stream: wi...
Invoking JavaScript code in an iframe from the parent page
... that.)
window.frames[number] is also very reliable, but knowing the right index is the trick. You can get away with this eg. if you know you only have the one iframe on the page.
It is entirely possible the child iframe hasn't loaded yet, or something else went wrong to make it inaccessible. You ma...
In Python script, how do I set PYTHONPATH?
...his:
import sys
import os # if you want this directory
try:
sys.path.index('/dir/path') # Or os.getcwd() for this directory
except ValueError:
sys.path.append('/dir/path') # Or os.getcwd() for this directory
share...
How to pass an ArrayList to a varargs method parameter?
.... Java needs a lot of things. ;) I also (coming from a C# background) miss index operators. Working with dictionaries is much more smooth in C# than working with HashMaps in Java.
– Per Lundberg
Jan 15 '19 at 9:12
...
SQL multiple column ordering
...
Does indexing work, If I use "CASE" inside "ORDER BY"?
– Rousonur Jaman
Sep 10 '17 at 10:14
add a comment...
Compare if two variables reference the same object in python
... integers are failry common (-1 as an error value, 0 any time you actually index something, small numbers are usually reasonable default values) Python optimizes by preallocating small numbers (-5 to 256) and reuses the same integer object. Thus your example only works for numbers in this range. Try...
Is it possible to get the iOS 5.1 SDK for Xcode 4.2 on Snow Leopard?
... @natbro - I still see the 4.3.1 dmg fine at developer.apple.com/downloads/index.action# and am currently downloading it.
– SubG
Mar 23 '12 at 17:02
1
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How do ports work with IPv6?
...lude [] around your IP.
For example : http://[1fff:0:a88:85a3::ac1f]:8001/index.html
Wikipedia has a pretty good article about IPv6: http://en.wikipedia.org/wiki/IPv6#Addressing
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improve th...
How to clone ArrayList and also clone its contents?
... new ArrayList<Dog>();
clonedList.addAll(dogs);
3 Using addAll(int index, Collection<? extends E> c) method with int parameter
ArrayList<Dog> dogs = getDogs();
ArrayList<Dog> clonedList = new ArrayList<Dog>();
clonedList.addAll(0, dogs);
NB : The behavior of these ...