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How do I avoid capturing self in blocks when implementing an API?
... If you're not using Automatic Reference Counting (ARC), you can do this:
__block MyDataProcessor *dp = self;
self.progressBlock = ^(CGFloat percentComplete) {
[dp.delegate myAPI:dp isProcessingWithProgress:percentComplete];
}
The __block keyword marks variables that can be modified inside th...
Oracle “Partition By” Keyword
...
GuyGuy
8,85866 gold badges3232 silver badges4242 bronze badges
6
...
Generic method multiple (OR) type constraint
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Adding two Java 8 streams, or an extra element to a stream
...ally bad?
– quantum
Dec 8 '15 at 17:32
1
@Quantum: What's the meaning of compare(reverse(getType(...
How to get a property value based on the name
...eflection
– nwsmith
Aug 1 '19 at 17:32
add a comment
|
...
Remove characters except digits from string using Python?
...ion of "everything but" a few characters:
import string
class Del:
def __init__(self, keep=string.digits):
self.comp = dict((ord(c),c) for c in keep)
def __getitem__(self, k):
return self.comp.get(k)
DD = Del()
x='aaa12333bb445bb54b5b52'
x.translate(DD)
also emits '1233344554552'. ...
Passing arrays as url parameter
...
There is a very simple solution: http_build_query(). It takes your query parameters as an associative array:
$data = array(
1,
4,
'a' => 'b',
'c' => 'd'
);
$query = http_build_query(array('aParam' => $data));
will return
string(63) "...
What is the difference between HAVING and WHERE in SQL?
...
Check out this w3schools link for more information
Syntax:
SELECT column_name, aggregate_function(column_name)
FROM table_name
WHERE column_name operator value
GROUP BY column_name
HAVING aggregate_function(column_name) operator value
A query such as this:
SELECT column_name, COUNT( column_n...
Why does the CheckBoxFor render an additional input tag, and how can I get the value using the FormC
...
KyleMit
54.2k4747 gold badges332332 silver badges499499 bronze badges
answered May 3 '13 at 0:32
RyanJMcGowanRyanJMcGowan
...
Why does the C++ map type argument require an empty constructor when using []?
...insert.
– prideout
Nov 18 '14 at 19:32
3
Why is that std::<map>::value_type there in the in...