大约有 48,000 项符合查询结果（耗时：0.0760秒） [XML]
Do NSUserDefaults persist through an Update to an app in the Appstore?
... NSUserDefaults get reset when you submit an update to an app on the App Store, or are they reset?
6 Answers
...
How does “304 Not Modified” work exactly?
...
When the browser puts something in its cache, it also stores the Last-Modified or ETag header from the server.
The browser then sends a request with the If-Modified-Since or If-None-Match header, telling the server to send a 304 if the content still has that date or ETag.
The se...
When to use NSInteger vs. int
When should I be using NSInteger vs. int when developing for iOS? I see in the Apple sample code they use NSInteger (or NSUInteger ) when passing a value as an argument to a function or returning a value from a function.
...
Is it possible to “decompile” a Windows .exe? Or at least view the Assembly?
...you can't really decompile an .exe, but can I at least view it in Assembly or attach a debugger?
16 Answers
...
PostgreSQL: Which Datatype should be used for Currency?
...
Numeric with forced 2 units precision. Never use float or float like datatype to represent currency because if you do, people are going to be unhappy when the financial report's bottom line figure is incorrect by + or - a few dollars.
T...
How to get whole and decimal part of a number?
...
$n = 1.25;
$whole = floor($n); // 1
$fraction = $n - $whole; // .25
Then compare against 1/4, 1/2, 3/4, etc.
In cases of negative numbers, use this:
function NumberBreakdown($number, $returnUnsigned = false)
{
$negative = 1;
if ($num...
Unique combination of all elements from two (or more) vectors
I am trying to create a unique combination of all elements from two vectors of different size in R.
5 Answers
...
Check if a given key already exists in a dictionary and increment it
...
You 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 gi...
Get Slightly Lighter and Darker Color from UIColor
I was looking to be able to turn any UIColor into a gradient. The way I am intending to do this is by using Core Graphics to draw a gradient. What I am trying to do is to get a color, lets say:
...
Python csv string to array
Anyone know of a simple library or function to parse a csv encoded string and turn it into an array or dictionary?
10 Answe...