Tencent Digital Message (compiled: Chenzai) After years of painstaking, Chromebook finally ushered in the rise (at least in the school), which means that mainstream PC manufacturers and chip manufacturers also intend to participate in it, such as Nvidia. Although the company has previously shied away from Chrome OS devices, they have now provided their own Tegra K1 chips for a variety of Chromebook, and are
1. {} input is curly braceMycat = {' Size ': ' fat ', ' color ': ' Gray ', ' disposition ': ' Loud '} Key: Valuemycat[' size ' = fat2, 3 Methods of the dictionary:Keys (), values (), items (), the values returned by these methods are not real lists, they cannot be modified, but can be traversed with a for loopFor V in Mycat.values ():Print (v)For I in Mycat.keys ():Print (i)For k,v in Mycat.items ():Print (k ': ' V)3. Check if there is a key-value in the dictionary:' Name ' in Spam.keys ()' Valu
, ZigBee basic Experiment--graphics and code detailed timer 1 (16-bit timer) (long text)[ZigBee] 6, ZigBee basic Experiment--timer 3 and Timer 4 (8-bit timer)[ZigBee] 7, ZigBee analysis of the UART (only serial transmission)[ZigBee] 8, ZigBee of the UART analysis • Two (serial transceiver)[ZigBee] 9, ZigBee AD Analysis--ad collection CC2530 temperature serial display[ZigBee] 10, ZigBee sleep Timer[ZigBee] 11, ZigBee Sleep Timer two[ZigBee] 12, ZigBee watchdog timer--Bite the good dog when hungry
" replaces the second inner join with a left outer join. Use TSQL2012
GO
SELECT C.custid, O.orderid, Od.productid, Od.qty from
sales.customers as C
= C.custid
= O.orderid "2" uses the inner join first, and then the right outer join. SELECT C.custid, O.orderid, Od.productid, Od.qty
From Sales.orders as O
= O.orderid
= C.custid "3" is changed on the original basis, and the inner join becomes an independent logical phase. Use TSQL2012
GO
SELECT C.custid, O.orderid, Od.productid, Od.qty from
IOS review note 13: Common structBoth must contain the header file of Foundation. h.CG: CoreGraphics framework for short. The content starting with CG is declared in the Foundation framework, but not implemented.NS: NextStep1. Range of nsange1 Definition:
typedef struct _NSRange{NSUInteger location;NSUInteger length;}NSRange;
2 example:
NSString * str = @ "I love OC"; // nsange * rg = {2, 4}; // nsange *
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