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How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar
...s for this example
NSFetchedResultsController *fetchedResultsController_;
NSFetchedResultsController *searchFetchedResultsController_;
NSManagedObjectContext *managedObjectContext_;
// The saved state of the search UI if a memory warning removed the view.
NSString *savedS...
Recommended way of making React component/div draggable
...;
return result;
};
class Draggable extends React.PureComponent {
_relX = 0;
_relY = 0;
_ref = React.createRef();
_onMouseDown = (event) => {
if (event.button !== 0) {
return;
}
const {scrollLeft, scrollTop, clientLeft, clientTop} = docume...
Is there an IDictionary implementation that, on missing key, returns the default value instead of th
...ctionary<TKey, TValue>
{
private IDictionary<TKey, TValue> _dict = new Dictionary<TKey, TValue>();
public TValue this[TKey key]
{
get
{
TValue val;
if (!TryGetValue(key, out val))
return default(TValue);
...
This type of CollectionView does not support changes to its SourceCollection from a thread different
...cher.Invoke((Action)delegate // <--- HERE
{
_matchObsCollection.Add(match);
});
}
}
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foll...
How to measure time taken between lines of code in python?
...
If you want to measure CPU time, can use time.process_time() for Python 3.3 and above:
import time
start = time.process_time()
# your code here
print(time.process_time() - start)
First call turns the timer on, and second call tells you how many seconds have elapsed.
The...
Passing parameters to JavaScript files
...ode belongs in file.js:
var MYLIBRARY = MYLIBRARY || (function(){
var _args = {}; // private
return {
init : function(Args) {
_args = Args;
// some other initialising
},
helloWorld : function() {
alert('Hello World! -' + _args[0])...
How do I create a variable number of variables?
... answered Sep 3 '09 at 12:41
c_harmc_harm
add a comment
...
In-memory size of a Python structure
...g/measure-real-size-any-python-object/
The punchline:
import sys
def get_size(obj, seen=None):
"""Recursively finds size of objects"""
size = sys.getsizeof(obj)
if seen is None:
seen = set()
obj_id = id(obj)
if obj_id in seen:
return 0
# Important mark as s...
Replace multiple characters in one replace call
...
Use the OR operator (|):
var str = '#this #is__ __#a test###__';
str.replace(/#|_/g,''); // result: "this is a test"
You could also use a character class:
str.replace(/[#_]/g,'');
Fiddle
If you want to replace the hash with one thing and the underscore with anothe...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1
...your terminal not being set to UTF-8. Here is my terminal
$ echo $LANG
en_GB.UTF-8
$ python
Python 2.7.3 (default, Apr 20 2012, 22:39:59)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> s = '(\xef\xbd\xa1\xef\xbd\xa5\xcf\x89\xef\xbd\xa5\xe...