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runOnUiThread vs Looper.getMainLooper().post in Android
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The following behaves the same when called from background threads:
using Looper.getMainLooper()
Runnable task = getTask();
new Handler(Looper.getMainLooper()).post(task);
using Activity#runOnUiThread()
Runnable task = getTask();
runOnUiThread(task);
The only ...
HTML in string resource?
...ion I can see that they have a way of not having to encode the HTML. Quote from the Contacts application strings.xml :
6 A...
Object of custom type as dictionary key
...329: are you trying to use some blender data structure as keys? Apparently from some repos certain objects require you to "freeze" them first to avoid mutability (mutating a value-based object that has been used as a key in a python dictionary is not permitted)
– 6502
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How does the static modifier affect this code?
... values are:
A obj=null
num1=0
num2=0
The second phase, execution, starts from top to bottom. In Java, the execution starts from the first static members.
Here your first static variable is static A obj = new A();, so first it will create the object of that variable and call the constructor, hence...
Good Hash Function for Strings
...collisions. But if I SHA-256 the string value and then generate a hashcode from the digested string, the collision ratio is less than 0.0001%. Thanks!
– benjismith
Nov 18 '10 at 18:54
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Remove last character from string. Swift language
How can I remove last character from String variable using Swift? Can't find it in documentation.
22 Answers
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When to use @QueryParam vs @PathParam
...ill set up his/her profile, save it, and then unlikely to change that much from there on; this means webcrawlers/search engines/browsers/etc can cache this page nicely based on the path.
If a parameter passed in the URL is likely to change the page layout/content then I'd use that as a queryparam....
Definition of a Balanced Tree
... For any node in AVL, the height of its left subtree differs by at most 1 from the height of its right subtree.
Next question, what is "height"?
The "height" of a node in a binary tree is the length of the longest path from that node to a leaf.
There is one weird but common case:
Peop...
Return a “NULL” object if search result not found
...ava, if I had class with a 'search' method that would return an object T from a Collection< T > that matched a specific parameter, I would return that object and if the object was not found in the collection, I would return null . Then in my calling function I would just check if(tResult...
Check if a given key already exists in a dictionary and increment it
...are looking for collections.defaultdict (available for Python 2.5+). This
from collections import defaultdict
my_dict = defaultdict(int)
my_dict[key] += 1
will do what you want.
For regular Python dicts, if there is no value for a given key, you will not get None when accessing the dict -- a Ke...