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Remove header and footer from window.print()
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150
In Chrome it's possible to hide this automatic header/footer using
@page { margin: 0; }
Since...
type object 'datetime.datetime' has no attribute 'datetime'
...lib/python2.6/lib-dynload/datetime.so'>
>>> datetime.datetime(2001,5,1)
datetime.datetime(2001, 5, 1, 0, 0)
But, if you import datetime.datetime:
>>> from datetime import datetime
>>> datetime
<type 'datetime.datetime'>
>>> datetime.datetime(2001,5,1) ...
How to avoid 'cannot read property of undefined' errors?
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Update:
If you use JavaScript according to ECMAScript 2020 or later, see optional chaining.
TypeScript has added support for optional chaining in version 3.7.
// use it like this
obj?.a?.lot?.of?.properties
Solution for JavaScript before ECMASCript 2020 or TypeScript older ...
Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术
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stack segment
db 100 dup (?) ;定义100个字节的内存存储单元空间，默认值为？
stack ends
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 数据段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>...
Boolean vs boolean in Java
... Java. The default value of the former is null while in the latter it's 0 . How about Boolean vs boolean ?
7 Answers...
Making an array of integers in iOS
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160
You can use a plain old C array:
NSInteger myIntegers[40];
for (NSInteger i = 0; i < 40; i+...
Programmatically select text in a contenteditable HTML element?
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answered May 27 '11 at 9:05
Tim DownTim Down
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Are Swift variables atomic?
...ditional keywords (similar to @lazy) might be introduced later on.
Update 07/20/15: according to this blogpost on singletons swift environment can make certain cases thread safe for you, i.e.:
class Car {
static let sharedCar: Car = Car() // will be called inside of dispatch_once
}
private le...
@class vs. #import
...ter to it (really, just a pointer). Thus, in your header, @class suffices 90% of the time.
However, if you ever need to create or access myObject's members, you'll need to let the compiler know what those methods are. At this point (presumably in your implementation file), you'll need to #import "M...
How do I perform an IF…THEN in an SQL SELECT?
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30 Answers
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