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Declaring variables inside loops, good practice or bad practice?
...and it can pull invariants out of your loop. In the case of the const char array (above) - that array could be pulled out. However, the constructor and destructor must be executed at each iteration in the case of an object (such as std::string). In the case of the std::string, that 'space' includes ...
What's the difference between the atomic and nonatomic attributes?
... Here's an example similar to @StevenKramer 's: I have a @property NSArray* astronomicalEvents; that lists data I want to display in the UI. When the application launches the pointer points to an empty array, then the app pulls data from the web. When the web request completes (in a different ...
How to parse the AndroidManifest.xml file inside an .apk package
...numbStrings = LEW(xml, 4*4);
// StringIndexTable starts at offset 24x, an array of 32 bit LE offsets
// of the length/string data in the StringTable.
int sitOff = 0x24; // Offset of start of StringIndexTable
// StringTable, each string is represented with a 16 bit little endian
// character coun...
What does “use strict” do in JavaScript, and what is the reasoning behind it?
...ctal forms are no longer allowed.
Et cetera
The arguments pseudo array becomes a little bit more
array-like in ES5. In strict mode, it loses its callee and caller
properties. This makes it possible to pass your arguments to untrusted
code without giving up a lot of confidential conte...
What do the terms “CPU bound” and “I/O bound” mean?
...res a RAM access! */
sum += is[i]
Parallelizing that by splitting the array equally for each of your cores is of limited usefulness on common modern desktops.
For example, on my Ubuntu 19.04, Lenovo ThinkPad P51 laptop with CPU: Intel Core i7-7820HQ CPU (4 cores / 8 threads), RAM: 2x Samsung M4...
Using -performSelector: vs. just calling the method
...ctor withObject:(id)anArgument afterDelay:(NSTimeInterval)delay inModes:(NSArray *)modes;
- (void)performSelector:(SEL)aSelector withObject:(id)anArgument afterDelay:(NSTimeInterval)delay;
- (void)performSelector:(SEL)aSelector target:(id)target argument:(id)arg order:(NSUInteger)order modes:(NSArra...
How to get string objects instead of Unicode from JSON?
...omma-separated and enclosed in curly braces), but not if it's, say, a JSON Array. So if given a JSON Array like ["a", "b"], the result will still be [u'a', u'b']. None of the other currently available customizing hook-type parameters for json.loads() can do the job either.
– ma...
How to avoid null checking in Java?
...h methods that return collections, it's easy: return empty collections (or arrays) instead of nulls pretty much all the time.
With non-collections it might be harder. Consider this as an example: if you have these interfaces:
public interface Action {
void doSomething();
}
public interface Par...
How to handle many-to-many relationships in a RESTful API?
... in this solution, when you call GET /Players/{playerId}/Teams, you get an array of Teams resources, that is exactly the same resource you get when you call GET /Teams/{teamId}. The reverse follows the same principle, you get an array of Players resources when call GET /Teams/{teamId}/Players.
In e...
Should I return a Collection or a Stream?
...or the simple fact that whatever Collection you choose to put it in (e.g., ArrayList) may not be the form they want, and then the caller has to copy it anyway. if you return a stream, they can do collect(toCollection(factory)) and get it in exactly the form they want.
The above "prefer Stream" case...