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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...nion). The update() method would be what I need, if it returned its result instead of modifying a dictionary in-place.
4...
Android update activity UI from service
...rivate SensorEventListener pressureListener;
private ObservableEmitter<Float> pressureObserver;
private Observable<Float> pressureObservable;
public class LocalBinder extends Binder {
public AndroidBmService getService() {
return AndroidBmService.this;
...
How to align absolutely positioned element to center?
...lute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
<section>
<div>
<h1>Popup</h1>
</div>
</section>
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How do I get the type of a variable?
...
You can use the typeid operator:
#include <typeinfo>
...
cout << typeid(variable).name() << endl;
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How can I obtain an 'unbalanced' grid of ggplots?
With grid.arrange I can arrange multiple ggplot figures in a grid to achieve a multi-panel figure by using something like:
...
SignalR - Sending a message to a specific user using (IUserIdProvider) *NEW 2.0.0*
... user in your application.
In SignalR 2.0, this is done by using the inbuilt IPrincipal.Identity.Name, which is the logged in user identifier as set during the ASP.NET authentication.
However, you may need to map the connection with the user using a different identifier instead of using the Identi...
Named capturing groups in JavaScript regex?
...ere is no such thing as named capturing groups in JavaScript. What is the alternative way to get similar functionality?
10 ...
Best way to serialize an NSData into a hexadeximal string
...Returns an empty string if NSData is empty.
NSData+Conversion.h
#import <Foundation/Foundation.h>
@interface NSData (NSData_Conversion)
#pragma mark - String Conversion
- (NSString *)hexadecimalString;
@end
NSData+Conversion.m
#import "NSData+Conversion.h"
@implementation NSData (NSDa...
Macro vs Function in C
...s but doesn't completely eliminate these problems.
When macros contain multiple statements, you can get in trouble with control-flow constructs:
#define swap(x, y) t = x; x = y; y = t;
if (x < y) swap(x, y); -->
if (x < y) t = x; x = y; y = t; --> if (x < y) { t = x; } x = y; y = ...
Safe (bounds-checked) array lookup in Swift, through optional bindings?
.... for Set instances, if we were to access a set element by index (SetIndex<Element>), we can run into runtime exceptions for indices that are >= startIndex and < endIndex, in which case the safe subscript fails (see e.g. this contrived example).
– dfri
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