C#學習筆記之二（stack, queue, string, HashTable,StringBui
2024-07-21 02:19:43
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enqueue()
dequeue()
peek() //only get first element, not delete it
stack:
count()
clear()
peek()
pop()
push()
copyto(array, offset) //copy to array
dictionary/hashtable:
keys //colleation of keys,
values //colleation of value
count()
clear()
contains() // is element in hashtable
containskey() // is key in hashtable
item() //indexer for hashtable
add() // add entry with key/value
getenumerator() // creat and return a enumator object
strings:
string
compare() split()
concat() startswith()
equals() tolower()/toupper()
insert() trim()
format()
string.compare(s1,s2); //case sensitive
string.compare(s1,s2, true) //case not sensitive
string s3 = @"test / .net"
string s6 string.copy(s5);
string s7 = s6
s7 == s6
s7.equals(s6)
string.equals(s7,s6)
s7.length
s3.endwith("test")
int offset = s3.indexof("test") //first occurence
string s10 = s3.insert(offset, "ddd");
string s11 = s3.insert(s3.indexof("ddd"), "eee");
s12.split(delimiters)
regex r = new regex(" |,");
foreach( string s in r.split(s12)) {}
stringbuilder
stringbuilder sb = new stringbuild();
append()
tostring()
regular expresstions:
using system.text.regularexpressions;
