compare

I need to check whether an std:string begins with "xyz". How do I do it without searching through the whole string or creating temporary strings with substr(). I would use compare method: std::string s("xyzblahblah"); std::string t("xyz") if (s.compare(0, t.length(), t) == 0) { // ok } Neutrino An approach that might be more in keeping with the spirit of the Standard Library would be to define your own begins_with algorithm. #include <algorithm> using namespace std; template<class TContainer> bool begins_with(const TContainer& input, const TContainer& match) { return input.size() >= match.size

I am new to C#. I have 2 strings, they are representing characters from International Phonetic Alphabet. String 1 - ðə ɻɛd fɑks ɪz hʌŋgɻi String 2 - ðæt ɪt foks ɪn ðʌ sʌn ɻe͡i Now I need to compare String 1 with String 2 and find how much String 2 differ from String 1 . I need this value as a percentage value. How can I do this? Small code example will help me a lot. Your help will be greatly appreciated. Ofiris You should have tell what is your String Metric Also, have a look in this How to find difference between two strings - C# question. This will compare char by char, it is different than

#include <iostream> using namespace std; int main() { char word[10]="php"; char word1[10]="php"; if(word==word1){ cout<<"word = word1"<<endl; } return 0; } I don't know how to compare two char strings to check they are equal. My current code is not working. Use std::string objects instead: #include <iostream> #include <string> using namespace std; int main() { string word="php"; string word1="php"; if(word==word1){ cout<<"word = word1"<<endl; } return 0; } Pubby Use strcmp. #include <cstring> // ... if(std::strcmp(word, wordl) == 0) { // ... } To justify c++ tag you'd probably want to declare

I need to comapre two files f1.txt and f2.txt and obtain matches, and non-matches, for this case I am looking to match first field on both files. And print first the second field of f2.txt, then print the entire line of f1.txt. And for no match found on f2.txt to state "Not Found" and then print f1.txt entire line. F1.txt 1;2;3;4;5;6;7;8 1a;2;3;4;5;6;7;8 1b;2;3;4;5;6;7;8 2b;2;3;4;5;6;7;8 F2.txt 1;First 1a;Firsta 1b;Firstb Desired output: First;1;1;2;3;4;5;6;7;8 Firsta;1a;1a;2;3;4;5;6;7;8 Firstb;1b;1b;2;3;4;5;6;7;8 Not Found;2b;2;3;4;5;6;7;8 I am able to obtain the matches but not the non match

This is a follow up question to Retrieve audited entities name, old value and new value of the given revision I have figured out how to get the two revision of an entity but don't see any easy to find the difference between the two. Is there anything in envers that will help doing a diff of an entity at different revisions? Or any good libraries? I would be really cool if I could get the property modified (_mod) field fields. So what I came up with to make life easier was to create an annotation to mark the fields I was interested in comparing. Without I ended up having to get with sticking to

can i somehow compare two numbers in regex? i want regex that is correct for 10-12, but incorrect for 12-10. I mean that 10 must be smaller than 12. I want to do it in Javascript. If the input is always of the form X-Y, then why not use the split() function with '-' as the delimiter and then compare the two parts with > You can't compare numerical values using RegExps. I wouldn't use regex for this. I'd split the string on the operator, then compare the two resulting numbers based on what operator I found (I'm assuming 10+12 and 12+10 would both be legal). The problem here is that you're

I am trying to modify value in dictionary, but the compiler throws KeyNotFoundException . I'm sure, I declared that key in dictionary, because I am calling GenerateEmptyChunks() method, which fills dictionary with chunks with key of their position and values are empty for level generator. I've checked debugger and Chunks dictionary object is correctly filled with keys and values. Is it caused by my unworking CompareTo method? If yes, how I have modify CompareTo method to return right values? public Dictionary<WPoint, WChunk> Chunks = new Dictionary<WPoint, WChunk>(); GenerateEmptyChunks()