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20 methods for creating ndarrary in Python

type as a given array.Parameter subok, whether to inherit the data type of A;The parameter order, which specifies the stored layout of the returned results in memory, is ' K ' by default, indicating as much as possible as a.# 返回一个与arr8形状应的全0数组= np.zeros_like(arr8)arr9array([[ 0., 0., 0.], [ 0., 0., 0.], [ 0., 0., 0.], [ 0., 0., 0.]])Numpy.ones_like (A, Dtype=none, order= ' K ', subok=true) function,Returns an array that is the same as the shape parameter of a and the e

Some algorithms for prime judgment (summary && contrast)

is based on the Fermat theorem and the two-time detection theorem: Two-time detection theorem: If P is an odd prime, then the solution for X2≡1 (MODP) is x = 1 or x = p-1 (mod p) So we can turn X into the R*2^t form, where R is an oddThen we combine two algorithms fast power to stabilize O (log x) for a single judgmentBut this algorithm is a non-perfect algorithm , every time it is 25% probability is wrong, so we can choose a few numbers to get a few timesBut by chance I see a pa

C + + simple memory leak checking mechanism implementation

size) 067 { 068 Return (operator new (size, __file__, __line__)); 069} 070 071 072 void operator Delete (void* p, const char*, int line) 073 { 074 Delete p; 075} 076 077 void operator Delete (void* p) 078 { 079 memory_tag* PTag = (memory_tag*) ((char*) p)-sizeof (Memory_tag)); 080//Removed from queue 081 Ptag->pprev->pnext = ptag->pnext; 082 if (ptag->pnext) 083 { 084 Ptag->pnext->pprev = ptag->pprev; 085} 086 free (PTag); 087}

New Local Storage example in Linux XenServer

Attributes with thresholds:id# attribute_name FLAG VALUE worst thresh TYPE UPDATED when_failed1 raw_read_error_rate 0x000f 006 pre-fail Always-3746883 spin_up_time 0x0003 094 094 pre-fail Always-04 Start_stop_count 0x0032 020 old_age Always-165 reallocated_sector_ct 0x0033 010 pre-fail Always-07 seek_error_rate 0x000f 253 030 Pre-fail Always-1439 power_on_hours 0x0032 Old_age Always-1Spin_retry_count 0x0013 097 Pre-fail Always-0Power_cycle_count 0x0032 020 old_age Always-16183 Runtime_bad_block

PHP Tutorials Download

employment Class (next) \ Preach Wisdom Podcast _ Hanshunping _php from getting started to mastering video tutorials The No. 068 is about the destructor method. wmvCD-ROM (ii) \php employment Class (next) \ Preach Wisdom Podcast _ Hanshunping _php from getting started to mastering the video tutorial No. 069 talk about the static keyword (static variable). wmvCD-ROM (ii) \php employment Class (next) \ Wisdom Podcast _ Hanshunping _php from getting started to mastering the video tutorial No. 070

01 data type, constant quantity, operator, expression, formatted input and output

In-Process conversion: 1, in order to distinguish the octal, hexadecimal difference: octal before adding 0, hexadecimal x0, such as 058,x059; 2, the conversion of binary, binary, octal, decimal, hexadecimal conversion between. (conversion to binary after the other good conversion) such as: decimal number 57, binary 111001, from binary to octal system, from the right of the binary to the left 3 digits of a group, the front is not enough to fill 0, that is 111,001, calculated octal

C language a variety of common sorts (direct insertion sort, binary insertion sort, bubble sort, select sort, heap sort)

]; 16X } 070 } 071 } 072 } 073 void Selectsort (int l[11])//Select sort complexity is: O (n^2) 074 { 075 int i=0,j=0,min_idx=0; 076 for (I=1;i 077 { 078 Min_idx=i; 079 f

Easyui Learning Easyui DataGrid Bulk Edit and Submit __java

Handler:function () { 047 var row = $dg. DataGrid (' getselected '); 048 if (row) { 049 var rowIndex = $dg. DataGrid (' Getrowindex ', row); 050 $dg. DataGrid (' DeleteRow ', rowIndex); 051 } 052 } 053 }, { 054 Text: "End edit", 055 ICONCLS: "Icon-cancel",

Increasing the efficiency of servlet access to databases with connection pooling (1) _jsp programming

); 060 if (pool!= null) { 061 return pool.getconnection (); 062} 063 return null; 064} 065 066/** 067 * Obtain an available connection. If no connection is available and the number of connections is less than the maximum number of connections, 068 * Creates and returns a new connection. Otherwise, wait for the other thread to release the connection within the specified time. 069 * 070 * @param name Connection pool name 071 * @param time wait in millis

Java regular expression matching phone format _java

, 134, 135, 136, 137, 138, 1390; * 180, 182, 185, 186, 187, 188, 1897; * 13, 15, 183, a total of 30 segments, 154, 181, 183, 184 for the time being, plus 147 altogether 27. * * Private Boolean Telcheck (String tel) {pattern p = pattern.compile ("^" (13\\d{9}$) | ( 15[0,1,2,3,5,6,7,8,9]\\d{8}$) | (18[0,2,5,6,7,8,9]\\d{8}$) | (147\\d{8}) $) "); Matcher m = p.matcher (tel); return m.matches (); } Java Regular Expression validation format (mailbox, phone number) Pa

PHP Plus watermark Proportional Scaling Program

[0]-$info 2[0]; 043 $y = 0; 044} 045//Position 3: Center 046 if ($positon ==3) 047 { 048 $x = ($info [0]-$info 2[0])/2; 049 $y = ($info [1]-$info 2[1])/2; 050} 051//Position 4: Bottom Left 052 if ($positon ==4) 053 { 054 $x = 0; 055 $y = $info [1]-$info 2[1]; 056} 057//Position 5: Bottom Right 058 if ($positon ==5) 059 { 060 $x = $info [0]-$info 2[0]; 061 $y = $info [1]-$info 2[1]; 062} 063 Imagecopymerge ($DESIMG, $WATERIMG, $x, $y, 0,0, $info 2[0], $info 2[1], $alpha); 0

MySQL Common interview problem summary (iii)

set cannot be loaded into memory, the cache does a lot of brush-writing work and can cause many cache misses. If you save the UUID value, you should remove the dash, preferably by using Uhex () to convert the UUID value to a 16-byte number and save it in the binary (16) column. 069 do not perform operations on the column SELECT * from users where year (adddate) will be performed on each row, which will cause the index to fail with a full table scan, so we can change it to SELECT * from us

Application of Replace function in Oracle

15V / 48 30 060 0 49 31 061 1 50 32 062 2 51 33 063 3 52 34 064 4 53 35 065 5 54 36 16W 6 55 37 067 7 56 38 070 8 57 39

SPOOL, Sqlloader Data Export import a little summary

is the AccountingOffice in Virginia30,consulting,virginia,14/04/2001 12:02:02,this is the ConsultingOffice in Virginia40,finance,virginia,987268297,this is the FinanceOffice in Virginia This loads the newline character into the database, but the following method does not, but requires the data to be in a different format LOAD DATAINFILE DEMO18. DAT "FIX 101"Into TABLE DEPTREPLACEFields TERMINATED by ', ' optionally enclosed by ' "'TRAILING Nullcols(DEPTNO,Dname "UPPER (NAME)",Loc "UPPER (: Loc)

Android Adapter Usage Summary-

MyListView4 extends Listactivity {006 007 008 P Rivate list 067 Public final class viewholder{068 public ImageView img;069 public TextView title;070 Public TextView info;071 Public Button viewbtn;072}073 074 075 public CLA SS Myadapter extends baseadapter{076 077 private layoutinflater minflater;078 079 0 Myadapter Public (context context) {081 This.minflater = layoutinflater.from (context); 082 }083 @Override084 public int getcount () {

Connect a GNS analog router to the Internet

(config-if) # ip add 192.168.0.2 255.255.255.0R1 (config-if) # no shutdownR1 (config-if )#* Mar 1 00:05:53. 659: % LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up* Mar 1 00:05:54. 659: % LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to upR1 (config-if) # endR1 #* Mar 1 00:07:06. 071: % SYS-5-CONFIG_ I: Configured from console by consoleR1 # ping 192.168.0.1Type escape sequence to abort.Sending 5, 100-byte

Internet Explorer 8 CSS Parsing Vulnerability

" + 021 "Content-Length: # {data. length}" + 022 "# {data }" 023 puts "[+] Sending :" 024 to_send.split (""). each do | line | 025 puts "# {line }" 026 end 027 sock. write (to_send) rescue return false 028 return true 029 end 030 031 def sock_read (sock, out_str, timeout = 5) 032 begin 033 if Kernel. select ([sock], [], [], timeout) 034 out_str.replace (sock. recv (1024 )) 035 puts "[+] Received :" 036 out_str.split (""). each do | line | 037 puts "# {line }" 038 end 039 else 040 sock. close 041

Summary of Oracle 11g Database startup errors

/oracle/app/oracle/product/11.2.0/dbhome_1/centos_orcl/sysman/log[Oracle @ centos ~] $ Tailf-n 3/home/oracle/app/oracle/product/11.2.0/dbhome_1/centos_orcl/sysman/log/emdctl. trc -- view the last three lines of logs and prompt for route and host errors14:54:47, 568 Thread-3032057536 WARN http: nmehl_connect_internal: connect failed to (centos: 1158): No route to host (error = 113)15:02:50, 071 Thread-3032803008 WARN http: nmehl_connect_internal: conne

Input and output of common numbering (JAVA)

/**tochangethislicenseheader,chooselicenseheaders Inprojectproperties.*tochangethistemplatefile,choose Tools|Templates*andopenthetemplateinthe editor.*/packagec2_1;/**** @author pc*/publicclassc2_1 {/*** @param argsthecommand linearguments*/publicstaticvoid main (String[]args) {bytea1=0071;//octal number bytea2=10;//decimal Number bytea3=0x21;//Hexadecimal number intb1,b2,i1=4; shortc1=0x1e2;longd=0x10ef,d1=1234567; b1=b2=15; System.out.println ("sum=" + (1+5)); system.out.print ("a1=0" + Integ

Python implements the xxd-I function of Linux commands

123456789ABCDEF.txtunsigned char __123456789ABCDEF_txt[] = {061, 062, 063, 064, 065,066, 067, 070, 071, 0101,0102, 0103, 0104, 0105, 0106,};unsigned int __123456789ABCDEF_txt_len = 15;E:\PyTest>python xxdi.py 123456789ABCDEF.txtunsigned char __123456789ABCDEF_txt[] = {0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43,0x44, 0x45, 0x46,};unsigned int __123456789ABCDEF_txt_len = 15; Take a slightly larger level-2 file as an example

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