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How to remove all the occurrences of a char in c++ string
...nclude <string>
#include <iostream>
#include <algorithm>
int main() {
std::string s1 = "a1a2b3c4a5";
char s2[256];
std::copy_if(s1.begin(), s1.end(), s2, [](char c){return c!='a';});
std::cout << s2 << std::endl;
return 0;
}
...
Automatic Retina images for web sites
...
There's no "good" way to convert in that direction, thus the "where possible". But with the exception of photography sites etc. you're generally going to be creating your art assets so I'd recommend having them done as vectors, which can easily be co...
ByteArray 扩展 - 字节数组处理工具 · App Inventor 2 中文网
...加不同类型的整数
call ByteArray1.Clear
call ByteArray1.AddInt16 12345
call ByteArray1.AddInt32 1234567890
call ByteArray1.AddSingle 3.14159
// 读取数据
set Position to 0
set Int16Value to ByteArray1.GetInt16(Position)
set Position to Position + 2
set ...
Cocoa: What's the difference between the frame and the bounds?
... height) positioned at 25,25 (x,y) of its superview. The following code prints out this view's bounds and frame:
// This method is in the view controller of the superview
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(@"bounds.origin.x: %f", label.bounds.origin.x);
NSLog(@"bounds.or...
Comparing strings by their alphabetical order
...ethod.
s1.compareTo(s2)
From the javadocs:
The result is a negative integer if
this String object lexicographically
precedes the argument string. The
result is a positive integer if this
String object lexicographically
follows the argument string. The
result is zero if the strings...
How to get HTTP response code for a URL in Java?
...enConnection();
connection.setRequestMethod("GET");
connection.connect();
int code = connection.getResponseCode();
This is by no means a robust example; you'll need to handle IOExceptions and whatnot. But it should get you started.
If you need something with more capability, check out HttpClient...
Check if a row exists, otherwise insert
...begin
drop table Bookings
end
GO
create table Bookings(
FlightID int identity(1, 1) primary key,
TicketsMax int not null,
TicketsBooked int not null
)
GO
insert Bookings(TicketsMax, TicketsBooked) select 1, 0
insert Bookings(TicketsMax, TicketsBooked) select 2, 2
insert Bookings...
Changing ImageView source
...heme()));
and how to validate for old API versions:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
myImgView.setImageDrawable(getResources().getDrawable(R.drawable.monkey, getApplicationContext().getTheme()));
} else {
myImgView.setImageDrawable(getResources().getDrawa...
What's the difference between SortedList and SortedDictionary?
...r than
SortedDictionary<TKey, TValue>.
(SortedList actually maintains a sorted array, rather than using a tree. It still uses binary search to find elements.)
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JFrame in full screen Java
...
@shaILU put all that into a new question with a minimal reproducible example
– Reimeus
Oct 17 '17 at 13:28
...