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How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar
I'm trying to implement search code in my CoreData-based iPhone app. I'm not sure how to proceed. The app already has an NSFetchedResultsController with a predicate to retrieve the data for the primary TableView. I want to make sure I'm on the right path before I change too much code. I'm confus...
Does Go have “if x in” construct similar to Python?
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There is no built-in operator to do it in Go. You need to iterate over the array. You can write your own function to do it, like this:
func stringInSlice(a string, list []string) bool {
for _, b := range list {
if b == a {
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Parse a URI String into Name-Value Collection
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If you are looking for a way to achieve it without using an external library, the following code will help you.
public static Map<String, String> splitQuery(URL url) throws UnsupportedEncodingException {
Map<String, String> query_pairs = new LinkedHashMap<String, String>();...
Appending to an empty DataFrame in Pandas?
Is it possible to append to an empty data frame that doesn't contain any indices or columns?
3 Answers
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How to configure git push to automatically set upstream without -u?
... to automatically set the upstream reference when I push a locally-created branch for the first time.
10 Answers
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Version number comparison in Python
I want to write a cmp -like function which compares two version numbers and returns -1 , 0 , or 1 based on their compared valuses.
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Throttling method calls to M requests in N seconds
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I'd use a ring buffer of timestamps with a fixed size of M. Each time the method is called, you check the oldest entry, and if it's less than N seconds in the past, you execute and add another entry, otherwise you sleep for the time differe...
What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
...when seen at the top of files is used to create a namespace, i.e. a named object under which functions and variables can be created without unduly polluting the global object.
The reason why it's used is so that if you have two (or more) files:
var MY_NAMESPACE = MY_NAMESPACE || {};
MY_NAMESPACE.f...
is there a post render callback for Angular JS directive?
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If the second parameter, "delay" is not provided, the default behaviour is to execute the function after the DOM has completed rendering. So instead of setTimeout, use $timeout:
$timeout(function () {
//DOM has finished rendering
});
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Best explanation for languages without null
Every so often when programmers are complaining about null errors/exceptions someone asks what we do without null.
11 Answe...