ÈçºÎʹÓÃObjective C½âÎöHTMLºÍXML
ʹÓÃObjective-C½âÎöHTML»òÕßXML£¬ÏµÍ³×Ô´øÓÐÁ½ÖÖ·½Ê½Ò»¸öÊÇͨ¹ýlibxml£¬Ò»¸öÊÇͨ¹ýNSXMLParser¡£²»¹ýÕâÁ½ÖÖ·½Ê½¶¼ÐèÒª×Ô¼ºÐ´ºÜ¶à±àÂëÀ´´¦ÀíץȡÏÂÀ´µÄÄÚÈÝ£¬¶øÇÒ²»ÊǺÜÖ±¹Û¡£
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-¼ÓÈë libxml2 µ½ÄãµÄÏîÄ¿ÖÐ
Menu Project->Edit Project Settings
ËÑË÷ “Header Search Paths”
Ìí¼ÓÐ嵀 search path “${SDKROOT}/usr/include/libxml2″
Enable recursive option
-¼ÓÈë libxml2 library µ½ÄãµÄÏîÄ¿
Menu Project->Edit Project Settings
ËÑË÷ “Other Linker Flags”
Ìí¼ÓÐ嵀 search flag “-lxml2″
-½«ÏÂÃæhppleµÄÔ´´úÂë¼ÓÈëµ½ÄãµÄÏîÄ¿ÖÐ:
HTFpple.h
HTFpple.m
HTFppleElement.h
HTFppleElement.m
XPathQuery.h
XPathQuery.m
-XPathѧϰµØÖ·http://www.w3schools.com/XPath/default.asp
ʾÀý´úÂ룺
#import "TFHpple.h"
NSData *data = [[NSData alloc] initWithContentsOfFile:@"example.html"];
// Create parser
xpathParser = [[TFHpple alloc] initWithHTMLData:data];
//Get all the cells of the 2nd row of the 3rd table
NSArray *elements = [xpathParser search:@"//table[3]/tr[2]/td"];
// Access the first cell
TFHppleElement *element = [elements objectAtIndex:0];
// Get the text within the cell tag
NSString *content = [element content];
[xpathParser release];
[data release];
ÁíÍ⣬»¹ÓÐÒ»¸öÀàËÆµÄ½â¾ö·½°¸¿ÉÒԲο¼
ElementParser http://github.com/Objective3/ElementParser
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º¯ÊýÃû: abs ¹¦ ÄÜ: ÇóÕûÊýµÄ¾ø¶ÔÖµ
ÓÃ ·¨: int abs(int i);
³ÌÐòÀý:
#include <stdio.h>
#include <math.h>
int main(void)
{
int number = -1234;
printf("number: %d absolute value: %d\n", number, abs(number));
return 0;
}
º¯ÊýÃû: atof
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printf("Hello world\n");
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