NSString *string1 = @"hello"; NSString *string2 = [string1 mutableCopy]; NSString *string3 = [string1 copy]; //NSLog(string2); //NSLog(string3); //比较指针 if (string1 == string2) { NSLog(@"指针相同"); } else { NSLog(@"string1通过深拷贝给string2所以指针不同"); } //比...
1、formelf.exe介绍 fromelf.exe即keil下的一个处理elf文件的工具,elf文件英文名为Executable and Linking Format ,该文件包括符号表,调试信息,汇编等等,所以通过使用fromelf.exe可以输出较多信息文件,比如hex、bin、asm等。 对于此工具详细的说明文件可以参考:using_the_fromelf_utility.pdf 该文档网上很容易搜索到,这...
在使用诸如NSLog, [NSString stringWithFormat:]之类的函数时,都是基于c/c++风格的字符串格式化工作的. Table 1 Format specifiers supported by the NSString formatting methods and CFString formatting functions 平台依赖 Mac OS X uses several data types—NSInteger, NSUInteger,CGFloat, and CFIndex—to provide...
puts("Enter a string, please."); fgets(words, STLEN, stdin); printf("Your string twice (puts(), then fputs()):\n"); puts(words); fputs(words, stdout); puts("Enter another string, please."); fgets(words, STLEN, stdin); printf("Your string twice (puts(), then fputs()):\n"...
Every config is constructed with four components: architecture string, ABI, reuse rule with architecture string and reuse rule with sub-extension. Re-use part support expansion operator (*) to simplify the combination of different sub-extensions, example 4 demonstrate how it uses and works. ...
Format)) return -1 } fmt.Printf("video_frame n:%d coded_n:%d\n", video_frame_count, frame.CodedPictureNumber) video_frame_count++ /* copy decoded frame to destination buffer: * this is required since rawvideo expects non aligned data */ libavutil.AvImageCopy(&video_dst_data, &video_...
step() — Pattern match with regular expression strcasecmp() — Case-insensitive string comparison strcat() — Concatenate strings strchr() — Search for character strcmp() — Compare strings strcoll() — Compare strings strcpy() — Copy string strcspn() — Compare strings strdup() ...
how to convert variant bstrVal to std::string How to cope with “Error 1920. Service … (…) failed to start. Veryfy that you have sufficent privileges to start system services”? how to copy the output text from the console window in the visual c++ console applications. How to create...
WithSemicolonToken(SyntaxToken) WithTypeParameterList(TypeParameterListSyntax) WriteTo(TextWriter) Writes the full text of this node to the specified TextWriter. (Inherited from SyntaxNode) Explicit Interface Implementations 展开表 IFormattable.ToString(String, IFormatProvider) (Inherited from C...
例如,多載 func(const pair<int, int>&) 和func(const pair<string, string>&),以及使用 pair<const char *, const char *> 呼叫func() 時,便會使用這項變更進行編譯。 但此變更會破壞需要積極執行 pair 轉換的程式碼。 一般可以藉由明確執行轉換的其中一部分來修正這類程式碼,例如將 make_pair(static_...