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Design Mode 1 simple factory, simple design mode Factory 1 #-*-coding: UTF-8-*-2 3 4 class Main (): 5 slot = None 6 7 def _ init _ (self ): 8 pass 9 10 def triggerEvent (self, slot): 11 pass12 13 def endup (sef): 14 pass15 16 def run (self): 17 pass18 19 # slot function, in triggerEvent, call 20 @ pyqtSlot () 21 def handleCard (): 22 pass23 24 25 26 class ChildMain1 (main): 27 slot = None28 29 def _ init _

struct usb_device_descriptor * ddesc = Dev-> descriptor; 529 int MSG =-1; 530 531 if (unusual_dev-> useprotocol! = Us_ SC _device 532 US-> subclass = idesc-> binterfacesubclass) 533 MSG + = 1; 534 if (unusual_dev-> usetransport! = Us_pr_device 535 US-> protocol = idesc-> binterfaceprotocol) 536 MSG + = 2; 537 if (MSG> = 0 ! (US-> flags us_fl_need_override )) 538 printk (kern_notice usb_storag

Comparison between Linux and Android sleep (1) Introduction to Linux sleep (suspend) In Linux (PC and embedded systems), sleep mainly consists of three main steps: 1. Freeze user-mode access and kernel-mode tasks; 2. Call the registered device and suspend callback functions in the registration order; 3. Sleep the core device and sleep the CPU into a sleep frozen process. The kernel sets the state of all pro

When you create a project, you often write some database operation methods into a class. The following describes the public methods. ////// Data Access abstract basic class///Public abstract class dbhelpersql (abstract class allowed (but not required) abstract class contains abstract members .){ Public static string connectionstring = Configurationmanager. connectionstrings ["connectionstring1"]. tostring (); // pubconstant. connectionstring; Public dbhelpersql (){} # Region Public Method # Regi

Match the end of the numberSource: How to use JavaScript regular expressions to remove the last set of numbers in a string, thank you. Such as30cac0040 Take out 403sfasdf92 Take out 92 Is the following:/d+$/g uniform number of spacesSource: The problem of regular matching spaces Characters in the string keys have spaces, but the number of spaces may be inconsistent, through the regular number of spaces to unify into one. For example: Blue ideal B

--- Jilin Delphi Development Network ------------------------------------------- Csdn forum show http://blog.csdn.net/ghyghost ---------------------------------------- Csdn Forum 22nd ---------------------------------------- This csdn forum show: Hnhb (no dead birds) ---------------------------------------- For more information:　　 I have been opening the word for a long time. I don't know what to write. It's 2000 words. The stone is really cool. ^-^, but it can also help me to recall the pat

I used a software named ringtones to convert music into available ringtones for the iPhone. I was very happy to use it at the beginning. But one day, I played an interface and told me that I couldn't use it anymore, I have a poor understanding of English, but I also understand the limit of 10 ringtones. $12.99 is required for purchase. So I thought about it and tried to crack it. First of all is the search, search for a blog http://www.robinlu.com/blog/archives/

C + + classes and vectorsC + + has many standard libraries that provide a number of pre-defined functions, such as mathematical calculations, file input/output, text manipulation, etc.At the same time, C + + contains a lot of Standard Template Library , which contains a lot of software applications and classes, programmers can directly use them.Standard library: A library that is part of the C + + language, such as cout, is an object in standard library STL a C + + library that contains prototyp