如果integer 大于 str 的长度,则返回长度为 integer 的新字符串,新字符串以 str 左对齐,并以 padstr 作为填充。否则,返回 str。 43 str.lstrip返回str 的副本,移除了前导的空格。 44 str.lstrip!从str 中移除前导的空格,如果没有变化则返回 nil。 45 str.match(pattern)如果pattern 不是正则表达式,则把 ...
enum NSStringDrawingOptions : NSInteger; Constants that specify the rendering options for drawing a string. Getting Numeric Values doubleValue The floating-point value of the string as a double. floatValue The floating-point value of the string as a float. intValue The integer value of the str...
RangeReplaceableCollection RegexComponent Sendable Sequence StringProtocol TextOutputStream TextOutputStreamable Transferable See Also Standard Library struct Int A signed integer value type. struct Double A double-precision, floating-point value type. struct Array An ordered, random-access collection. struct...
at()语法: reference at( size_type index ); at()函数返回一个引用,指向在index位置的字符. 如果index不在字符串范围内, at() 将报告"out of range"错误,并抛出out_of_range异常。 1 string str1 = "sagdfa"; 2 string str2 = "iuhkjgsaaaaf"; 3 4 string str = str1 +str2; 5 6 cout <...
Type:System.UInt16% When this method returns, contains the 16-bit unsigned integer value equivalent to the number contained in s, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the s parameter is nulla null reference (Nothing in Visual Basi...
Type: System.Int16% When this method returns, contains the 16-bit signed integer value equivalent to the number contained in s, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the s parameter is nulla null reference (Nothing in Visual Basic...
Allocates a new String constructed from a subarray of an array of 8-bit integer values. The offset argument is the index of the first byte of the subarray, and the count argument specifies the length of the subarray. Each byte in the subarray is converted to a char as specified in ...
2 str * integer 返回一个包含 integer 个 str 的新的字符串。换句话说,str 被重复了 integer 次。 3 str + other_str 连接other_str 到 str。 4 str << obj 连接一个对象到字符串。如果对象是范围为 0.255 之间的固定数字 Fixnum,则它会被转换为一个字符。把它与 concat 进行比较。
Allocates a new String constructed from a subarray of an array of 8-bit integer values. The offset argument is the index of the first byte of the subarray, and the count argument specifies the length of the subarray. Each byte in the subarray is converted to a char as specified in ...
0 (for 4 bit immediate) depending on the number range. */unsignedintheadersize;/* prevrawlensize + lensize. *///记录了当前节点实际数据的「类型和长度」,类型主要有两种:字符串和整数。unsignedcharencoding;/* Set to ZIP_STR_* or ZIP_INT_* depending on ...