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Clear back stack using fragments
...sing:
FragmentManager fm = getActivity().getSupportFragmentManager();
for(int i = 0; i < fm.getBackStackEntryCount(); ++i) {
fm.popBackStack();
}
But could equally have used something like:
((AppCompatActivity)getContext()).getSupportFragmentManager().popBackStack(String name, Fragmen...
How do I pass multiple parameters in Objective-C?
...u could write:
- (NSMutableArray*)getBusStops:(NSString*)busStop :(NSSTimeInterval*)timeInterval;
or what you suggested:
- (NSMutableArray*)getBusStops:(NSString*)busStop forTime:(NSSTimeInterval*)timeInterval;
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Why do we usually use || over |? What is the difference?
... addition, | can be used to perform the bitwise-OR operation on byte/short/int/long values. || cannot.
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How does Facebook disable the browser's integrated Developer Tools?
...e object.
//Since this is already a wrapped object it would be converted if we directly return it. Hence,
//`return result` would actually replicate the very normal behaviour as the result is converted.
//to output what's actually in the remote object, we have to st...
Input from the keyboard in command line application
...
It's actually not that easy, you have to interact with the C API. There is no alternative to scanf. I've build a little example:
main.swift
import Foundation
var output: CInt = 0
getInput(&output)
println(output)
UserInput.c
#include <stdio.h>
voi...
What is the rationale for fread/fwrite taking size and count as arguments?
...story. It would be better to contrast something reading, say, an array of int values, or an array of structures.
– Jonathan Leffler
Nov 17 '08 at 22:22
3
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Can an abstract class have a constructor?
...lass can have a constructor. Consider this:
abstract class Product {
int multiplyBy;
public Product( int multiplyBy ) {
this.multiplyBy = multiplyBy;
}
public int mutiply(int val) {
return multiplyBy * val;
}
}
class TimesTwo extends Product {
public TimesT...
How can I find the last element in a List?
...
If you just want to access the last item in the list you can do
if(integerList.Count>0)
{
var item = integerList[integerList.Count - 1];
}
to get the total number of items in the list you can use the Count property
var itemCount = integerList.Count;
...
Multiple glibc libraries on a single host
...e errors you are seeing.
The absolute path to ld-linux.so.2 is hard-coded into the executable at link time, and can not be easily changed after the link is done.
To build an executable that will work with the new glibc, do this:
g++ main.o -o myapp ... \
-Wl,--rpath=/path/to/newglibc \
-Wl,...
Why is processing a sorted array faster than processing an unsorted array?
...ly useless.
Further reading: "Branch predictor" article on Wikipedia.
As hinted from above, the culprit is this if-statement:
if (data[c] >= 128)
sum += data[c];
Notice that the data is evenly distributed between 0 and 255. When the data is sorted, roughly the first half of the iterations w...