*/@Nativepublicstaticfinal intMAX_VALUE=0x7fffffff;// ...} 无论MIN_VALUE和MAX_VALUE的值或注释都说明了int的取值范围。此时计算一下String的最大长度应该是: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 2^31-1=2147483647 回到length方法,我们看到length的值是通过是value获得的,而value在JDK8中...
那么。String在运行期有没有限制呢,答案是有的,和我们前文提到的那个Integer.MAX_VALUE有关 ,这个限制的值约等于4G,在运行期,如果String的长度超过这个范围,就可能会抛出异常。(在jdk 1.9之前) int 是一个 32 位变量类型,取正数部分来算的话,他们最长可以有 2^31-1 =2147483647 个 16-bit Unicodecharacter ...
An NSString object encodes a Unicode-compliant text string, represented as a sequence of UTF–16 code units. All lengths, character indexes, and ranges are expressed in terms of 16-bit platform-endian values, with index values starting at 0. An NSString object can be initialized from or wri...
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...
UTF-16 View A string’s utf16 property is a collection of UTF-16 code units, the 16-bit encoding form of the string’s Unicode scalar values. Each code unit is stored as a UInt16 instance. print(cafe.utf16.count) // Prints "11" print(Array(cafe.utf16)) // Prints "[67, 97, ...
()返回字符串的长度max_size()返回字符的最大可能个数rbegin()返回一个逆向迭代器,指向最后一个字符rend()返回一个逆向迭代器,指向第一个元素的前一个位置replace()替换字符reserve()保留一定容量以容纳字符串(设置capacity值)resize()重新设置字符串的大小rfind()查找最后一个与value相等的字符(逆向查找)size()...
A value of the STRING type. This parameter specifies the string that you want to encode. charset: required. A value of the STRING type. This parameter specifies the encoding format. Valid values: UTF-8, UTF-16, UTF-16LE, UTF-16BE, ISO-8859-1, and US-ASCII. Return value A value...
实际上,我们说的不同类型的数据结构,说的就是 value 的结构不一样。 Redis 中有9中数据结构,其中String、List、Hash、Set、Sorted Set是基本数据结构,也是最常用的数据结构。 除此之外,还有四种高级数据结构Bitmap、GEO、HyperLogLog和Stream,这几种数据结构各有各的特定的应用场景。
A typical value to specify is Integer. provider Type: System.IFormatProvider An IFormatProvider object that supplies culture-specific formatting information about s. result Type: System.Int64% When this method returns, contains the 64-bit signed integer value equivalent to the number conta...
public class MaxChar { private final static int MAX_UTF16_STRING_LENGTH = Integer.MAX_VALUE / 2; private static char[] generateCharData(int size) { char[] nonAscii = "\u0100".toCharArray(); char[] arr = new char[size]; System.arraycopy(nonAscii, 0, arr, 0, nonAscii.length); ...