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Can I use Objective-C blocks as properties?
...d accomplish such a task:
#import <Foundation/Foundation.h>
typedef int (^IntBlock)();
@interface myobj : NSObject
{
IntBlock compare;
}
@property(readwrite, copy) IntBlock compare;
@end
@implementation myobj
@synthesize compare;
- (void)dealloc
{
// need to release the block si...
Why can I use auto on a private type?
...ypes to template functions:
template <typename T>
void fun(T t) {}
int main() {
Foo f;
fun(f.Baz()); // ok
}
And why can we pass objects of private types to template functions, you ask? Because only the name of the type is inaccessible. The type itself is still usable, whic...
Default value in Go's method
... are optional, use empty string for default value
func Concat1(a string, b int) string {
if a == "" {
a = "default-a"
}
if b == 0 {
b = 5
}
return fmt.Sprintf("%s%d", a, b)
}
**Option 2:** A single optional parameter at the end
// a is required, b is optional.
// Only the first ...
Does constexpr imply inline?
...wing example:
main.cpp
#include <cassert>
#include "notmain.hpp"
int main() {
assert(shared_func() == notmain_func());
}
notmain.hpp
#ifndef NOTMAIN_HPP
#define NOTMAIN_HPP
inline int shared_func() { return 42; }
int notmain_func();
#endif
notmain.cpp
#include "notmain.hpp"
in...
Git Symlinks in Windows
...ome a problem for Windows developers. In windows (msysgit), the symlink is converted to a text file with a path to the file it points to. Instead, I'd like to convert the symlink into an actual Windows symlink.
...
Local and global temporary tables in SQL Server
...
Also worth pointing out: Local temporary tables are deleted when the scope that created them is closed. So, if you create a local temp table inside a sproc, and then try and access it outside that sproc - it won't exist.
...
How to change a TextView's style at runtime
...ance(getApplicationContext(), R.style.boldText);
if (Build.VERSION.SDK_INT < 23) {
myTextView.setTextAppearance(getApplicationContext(), R.style.boldText);
} else {
myTextView.setTextAppearance(R.style.boldText);
}
myTextView.setBackgroundResource(R.color.highlighte...
What is the difference between the template method and the strategy patterns?
...bstract methods. When a client invokes methods of the template's external interface the template calls its abstract methods (its internal interface) as required to invoke the algorithm.
class ConcreteAlgorithm : AbstractTemplate
{
void DoAlgorithm(int datum) {...}
}
class AbstractTemplate
{
...
How many spaces will Java String.trim() remove?
...
@user2864740: This answer isn't intended to be a comprehensive analysis of trim, isWhiteSpace etc, or a discussion of ambiguities in the Java docs; it's a straightforward answer to the specific question asked above -- ie, does the trim method remove a singl...
Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
...序分为大端(Big Endian)和小端(Little Endian)两种;
* 在Intel处理器中采用小端法表示, 在此采用小端法表示. (低地址存低位)
* 2. 请保证 pOutput 缓冲区有最少有 6 字节的空间大小!
********************************************************...