# Show stacksRouter # Show ProcessesRouter # Show CDP entry [device-name] Router # Show CDP neighborsRouter # Show CDP neighbors detail Router # Show IP routerRouter # Show IPX routerRouter # Show hostRouter # Show IP protocolRouter # Show IP interface type PortRouter # Show IPX interface type PortRouter # Show IPX serversRouter # Show IPX trafficRouter # Show access-lists [ACL-number]Router # Show ISDN statusRouter # Show dialer Router # Show
this file is as follows:
#!/usr/bin/pythondef Pots(): print "I'm Pots Phone"
In a similar way, the other two files with different functions have the same name as above:
The Phone/Isdn. py file has the function Isdn ()
The Phone/G3.py file has the function G3 ()
Now, a file _ init _. py is added to the Phone directory:
Phone/__init__.py
To make all functions available, when importing Phone, you nee
Integrated Service Digital Network: ISDN, a dial-up connection. isdn bri provides 2B + D data channels. Each B channel has a rate of 64 Kbps, and the maximum rate is kbps. isdnp has 2 standard; European Standard
Quasi (30B + d) and North American Standard (23B + d). ISDN is a digital transmission mode with fast connection and reliable transmission, and supports p
1. Open Folder command: CDCd/dirExample: Opening the ETC directorycd/etc/2. View current directory command: PWDExample: Current Location/tmptmp]# pwd/tmp3. View all files and folders under current path: LSExample: currently under the/etc/sysconfig/network-sprits directorynetwork-scripts]# lsIfcfg-eth0 ifdown-isdn ifup-aliases Ifup-plusb Init.ipv6-globalIfcfg-lo ifdown-post IFUP-BNEP ifup-post net.hotplugIfdown ifdown-ppp Ifup-eth ifup-ppp network-func
without the need for a permanent network signaling channel. The network signaling can be transmitted in B channel, and this B-channel is established on demand only when there is a traffic between two nodes, that is, to establish a special network network to provide all the special network services. Another application of voice compression is to reduce communication costs between two high traffic companies. This function is also known as the second call free business. This free second call is al
provide more flexible, More user-friendly access and more new business, Integrated Services Digital Network (ISDN) is to meet customer demand for a communication network.
ISDN uses the No.7-isup signaling approach, which can give full play to the advantages of long signaling messages and support for a variety of complementary services, support nx64kbit/s broadband services, and achieve complete digitizati
and deserializing using JSON
Advantage:
Variable can still be read after serializationCan be used for other systems because the JSON format is standardDisadvantage:
Only valid for UFT-8 data, other encodings may not work wellValid only for examples of stdclass classesSerialization and deserialization using the Serialize method
Advantage:
Allow non-UTF-8 variablesSupport for other instances except the Stdclass exceptionDisadvantage:
Encoded text is unreadable to peopleCannot be referenced
)
' site ' = > String ' tantengvip ' (length=10)
' owner ' => string ' Tuntun ' (length=6)
' age ' => int 5
We found that for a previously defined object or array, serialized with Serialize and JSON, the deserialized result is the same as it was, and there is no difference except that the serialized format is different.
So what's the difference between them? The following text summary is very good, do not explain yourself, you can write code validation.
Serializing and deserializing
entire system.Add:MySQL enforces indexes and disables an index1, MySQL mandatory use index: Force index (index name or primary key PRI)For example:SELECT * FROM Table Force index (PRI) limit 2; (use primary key)SELECT * FROM Table Force index (ZIDUAN1_INDEX) limit 2; (Enforce use of index "Ziduan1_index")SELECT * FROM Table Force index (PRI,ZIDUAN1_INDEX) limit
|+-------+-------------+------+-----+---------+----------------+| id| int(4) | NO | PRI | NULL| auto_increment || name | char(20)| NO | MUL | NULL||| age | tinyint(2) | NO | | 0 ||| dept | varchar(16) | YES | | NULL||+-------+-------------+------+-----+---------+----------------+4 rows in set (0.00 sec)Hint: PRI is the identity of the primary key, Mul is the identity of the normal index.2.
will be called once s_fdCommand has data. (skip onNewCommandConnect Analysis)ProcessCommandsCallback uses record_stream_get_next to block reading data from s_fdCommand until a complete request is received (the integrity of the request packet is guaranteed by the record_stream mechanism), and then delivers it to processCommandBuffer.After entering processCommandBuffer, we will officially enter the Command Parsing section. Each Command will exist in the form of RequestInfo.Typedef struct RequestI
good understanding of data distribution.
Create table(A NUMBER (5 ),B VARCHAR2 (30 ))COMPRESS;
Create table B(A NUMBER (5 ),B VARCHAR2 (30 ));
Insert into a values (1, 'aaaaaaaaaaaaaaaaa ');Insert into a values (2, 'aaaaaaaaaaaaaaa ');Insert into a values (3, 'aaaaaaaaaaaaaaaaa ');
Insert into B values (1, 'aaaaaaaaaaaaaaaaa ');Insert into B values (2, 'aaaaaaaaaaaaaaa ');Insert into B values (3, 'aaaaaaaaaaaaaaaaa ');
Data_block_dump, data header at 0x2b3b07180264====================Tsiz: 0x1f
Topic linksTest instructions: Look at a picture needs 1 unit time, if it is w need to flip B time, switch to adjacent position (left or right) need a time, ask T time can see a few picturesFrom the first start to the right to see a number of pictures and then go to the left will not go to the right, that is, only one time to change direction, many times change the direction of the candle, wasting time. So one enumeration can see the number of pictures N, to the right can see 1 to N, then left to
the complete square number.Sample Input41131001234567Sample Output1191632030745HINT1≤ki≤10^9 for 100% of data, t≤50Möbius inversionFeel this problem to do the idea is to find out the Möbius function, and then find the prefix and, then statistics 1~L-1 and 1~r in how many meet the conditions, minus a minus on the goodMaybe it's because I did less.Let's do two more points on this question ... Pay attention to the two-point boundary!!! Various WA1#include 2#include 3#include 4 using namespacestd;5
1000 of the adjustment amount per salary adjustment does not exceed 100000 of the new employee's salarySourceSolutionBecause every time the increase and decrease in wages is for all staff, so we can make a $lazy$ mark on the whole, indicating the change of wages$treap $ is recorded in real wages for everyone $x$ minus $lazy$ valueSo, for a new person, the relative value of his salary is the value of the initial wage $k$ minus $lazy$.Query operation because to check the $k$ large, for convenienc
Beg for an SQL statement and wait. Four tables, box is box, note is message, and box_user is used to chat in which boxes. Box_note refers to the boxes in which messages are stored (messages can be shared in multiple boxes ). The box is the same as a chat box. a message is the message in it. SQLcodemysql gt; describebox; + --------- beg for an SQL statement and wait.
Four tables,
Box is a box,
Note is a message,
Box_user is the user in which boxes to chat.
Box_note refers to the boxes in which
Beg for an SQL statement and wait. Four tables, box is box, note is message, and box_user is used to chat in which boxes. Box_note refers to the boxes in which messages are stored (messages can be shared in multiple boxes ). The box is the same as a chat box. a message is the message in it. SQLcodemysql gt; describebox; + ------------------------- + beg for an SQL statement and wait.
Four tables,
Box is a box,
Note is a message,
Box_user is the user in which boxes to chat.
Box_note refers to t
subtracting the number of μ[I] ==0 from XWe enumerate the number of factor I, which is less than or equal to x in number of I squared, obviously x/i^2According to the allowance, the front multiply a coefficient μ[i]Then ask for a and, two-point answer, the complexity is approximately o (n) preprocessing + O (√n * log n) Single access1#include 2#include 3#include 4#include 5#include 6#include 7#include 8#include 9#include Ten#include One#include A#include - - #defineMAXP 50000 the #defineSet
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