大约有 40,000 项符合查询结果（耗时：0.0430秒） [XML]
How can I programmatically check whether a keyboard is present in iOS app?
...ade easier to use.
@interface KeyboardStateListener : NSObject {
BOOL _isVisible;
}
+ (KeyboardStateListener *)sharedInstance;
@property (nonatomic, readonly, getter=isVisible) BOOL visible;
@end
static KeyboardStateListener *sharedInstance;
@implementation KeyboardStateListener
+ (KeyboardS...
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
... 23yr old Jack, but its not the same person.
class Person(object):
def __init__(self, name, age):
self.name = name
self.age = age
def __eq__(self, other):
return self.name == other.name and self.age == other.age
jack1 = Person('Jack', 23)
jack2 = Person('Jack', 23)
jac...
How to initialize an array in one step using Ruby?
...rray = [ '1', '2', '3' ]
You can also use a range:
array = ('1'..'3').to_a # parentheses are required
# or
array = *('1'..'3') # parentheses not required, but included for clarity
For arrays of whitespace-delimited strings, you can use Percent String syntax:
array = %w[ 1 2 3 ]
You can...
HTML Entity Decode [duplicate]
...ore.js utility-belt library which comes with escape and unescape methods:
_.escape(string)
Escapes a string for insertion into HTML, replacing &, <, >, ", `, and ' characters.
_.escape('Curly, Larry & Moe');
=> "Curly, Larry &amp; Moe"
_.unescape(string)
The opposite of es...
How to generate a random string in Ruby
...).chr }.join
I spend too much time golfing.
(0...50).map { ('a'..'z').to_a[rand(26)] }.join
And a last one that's even more confusing, but more flexible and wastes fewer cycles:
o = [('a'..'z'), ('A'..'Z')].map(&:to_a).flatten
string = (0...50).map { o[rand(o.length)] }.join
...
How do I convert from int to String?
...tClass extends java.lang.Object{
public TestClass();
Code:
0: aload_0
1: invokespecial #1; //Method java/lang/Object."<init>":()V
4: return
public static void main(java.lang.String[]);
Code:
0: iconst_5
1: istore_1
Initialise the StringBuilder:
2: ...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...Data);
VARIANT GetAsVariant();
protected:
LPSAFEARRAY m_pSA;
private:
};
It provides the exact same features that you will want to use with SAFEARRAY object but its usage may be simpler for some of us (like me!). The function GetAsVariant may be useful in case when you...
Pros and Cons of Interface constants [closed]
...mple of a good enough and a bad use:
Bad:
interface User {
const TYPE_ADMINISTRATOR = 1;
const TYPE_USER = 2;
const TYPE_GUEST = 3;
}
Good Enough:
interface HTTPRequest_1_1 {
const TYPE_CONNECT = 'connect';
const TYPE_DELETE = 'delete';
const TYPE_GET ...
Using numpy to build an array of all combinations of two arrays
... TypeError: slice indices must be integers or None or have an __index__ method thrown by cartesian(arrays[1:], out=out[0:m,1:])
– Boern
Sep 25 '17 at 15:48
...
'float' vs. 'double' precision
...54 bindings) is normative, but only in effect if an implementation defines __STDC_IEC_559__. An implementation that does not define that macro is free not to conform to IEEE-754.
– Stephen Canon
Feb 24 '11 at 0:06
...