string

问题 I'm wondering what's the difference between char s[] = "hello" and char *s = "hello" . After reading this and this, I'm still not very clear on this question. As I know, there are five data segments in memory, Text, BSS, Data, Stack and Heap. From my understanding, in case of char s[] = "hello" : "hello" is in Text. s is in Data if it is a global variable or in Stack if it is a local variable. We also have a copy of "hello" where the s is stored, so we can modify the value of this string via

问题 I have looked around the googleverse and stack overflow and have seen several similar questions to this but none of the answers I have found have worked for me. I am a new member so I am not allowed to comment on answers in someone else's question to ask for clarification so I have had to resort to asking my own. Ok so I am trying to pass a string array from a C# application to a C++ dll and then grab that information in another C# application. I believe I am passing to C++ properly but I can

问题 I have looked around the googleverse and stack overflow and have seen several similar questions to this but none of the answers I have found have worked for me. I am a new member so I am not allowed to comment on answers in someone else's question to ask for clarification so I have had to resort to asking my own. Ok so I am trying to pass a string array from a C# application to a C++ dll and then grab that information in another C# application. I believe I am passing to C++ properly but I can

问题 I wanted to this: for i := 0; i < len(str); i++ { dosomethingwithrune(str[i]) // takes a rune } But it turns out that str[i] has type byte ( uint8 ) rather than rune . How can I iterate over the string by runes rather than bytes? 回答1: See this example from Effective Go : for pos, char := range "日本語" { fmt.Printf("character %c starts at byte position %d\n", char, pos) } This prints : character 日 starts at byte position 0 character 本 starts at byte position 3 character 語 starts at byte position

问题 I wanted to this: for i := 0; i < len(str); i++ { dosomethingwithrune(str[i]) // takes a rune } But it turns out that str[i] has type byte ( uint8 ) rather than rune . How can I iterate over the string by runes rather than bytes? 回答1: See this example from Effective Go : for pos, char := range "日本語" { fmt.Printf("character %c starts at byte position %d\n", char, pos) } This prints : character 日 starts at byte position 0 character 本 starts at byte position 3 character 語 starts at byte position

问题 This question already has answers here : How to remove the backslash in string using regex in Java? (3 answers) Closed 2 years ago . I have a simple treatement but I'm stuck I have something like "\"iVBORw0KGgoAAAANSUhEUgAAAwoAAADwCAYAAACg2ZPDAAAABHNCSVQICAgIfAhkiAAAIABJREFU\\neJzt3XecXVW99"; public static void main(String[] args) { String value = "\"iVBORw0KGgoAAAANSUhEUgAAAwoAAADwCAYAAACg2ZPDAAAABHNCSVQICAgIfAhkiAAAIABJREFU\\neJzt3XecXVW99"; String filtre1 = value.replaceAll("\"", "");

问题 In my code, I am sending a txt file encoded into a byte array over the internet, and then converting the message back on the other side and displaying it. The problem is that when I try displaying it, it always comes out as "[B@1ef9f1d" or "[B@1764be1" etc. This is what recieves the data private void parsePacket(byte[] data, InetAddress address, int port) { String datasent[] = (new String(data).trim()).split(","); String type = datasent[0]; String message = datasent[1]; switch(type){//Data we

问题 In my code, I am sending a txt file encoded into a byte array over the internet, and then converting the message back on the other side and displaying it. The problem is that when I try displaying it, it always comes out as "[B@1ef9f1d" or "[B@1764be1" etc. This is what recieves the data private void parsePacket(byte[] data, InetAddress address, int port) { String datasent[] = (new String(data).trim()).split(","); String type = datasent[0]; String message = datasent[1]; switch(type){//Data we

问题 In my code, I am sending a txt file encoded into a byte array over the internet, and then converting the message back on the other side and displaying it. The problem is that when I try displaying it, it always comes out as "[B@1ef9f1d" or "[B@1764be1" etc. This is what recieves the data private void parsePacket(byte[] data, InetAddress address, int port) { String datasent[] = (new String(data).trim()).split(","); String type = datasent[0]; String message = datasent[1]; switch(type){//Data we

问题 This question already has answers here : How to concatenate a std::string and an int? (23 answers) Closed 4 years ago . string words[5]; for (int i = 0; i < 5; ++i) { words[i] = "word" + i; } for (int i = 0; i < 5; ++i) { cout<<words[i]<<endl; } I expected result as : word1 . . word5 Bu it printed like this in console: word ord rd d Can someone tell me the reason for this. I am sure in java it will print as expected. 回答1: C++ is not Java. In C++, "word" + i is pointer arithmetic, it's not