lastindexof

Select text from a Richtextbox in C#

由 痞子三分冷 提交于 2021-01-27 21:34:49
问题 I want to select the text that is between the last '{' and '}' of a richtextbox text. I have the next code, but I have an error on the "LastIndexOf" function and I don't know how to fix it. Can someone give me some help? private void highlightText() { mRtbxOperations.SelectionStart = mRtbxOperations.Text.LastIndexOf(@"{", 1, mRtbxOperations.SelectionStart); mRtbxOperations.SelectionLength = mRtbxOperations.Text.IndexOf(@"}", mRtbxOperations.SelectionStart, mRtbxOperations.Text.Length - 1);

I don't understand how lastIndexOf method works in java

由 ≡放荡痞女 提交于 2020-01-17 01:27:05
问题 I have to write a method called LastIndexOf that accepts an integer value as a parameter and that returns the index in the list of the last occurrence of the value, or -1 if the value is not found. This is the code I have but it doesn't return anything. To me it looks that it always is going to return -1 but I can't see it on the output because it doesn't print what the method returns. these are the values that list stores. list -> [2, 5, 7, 24, 5, 9, 13, 2] public class LastIndexOf { public

Java-like lastIndexOf in c++

由 ≯℡__Kan透↙ 提交于 2019-12-11 06:25:43
问题 I performed some research on boost and c++ but could not locate anything relevant to my question. Is there an boost library or STL function that implements lastIndexOf? 回答1: std::string has the member function rfind() which searches from the end and returns the index if found or std::string::npos if not. From the linked reference page: Finds the last substring equal to the given character sequence. 回答2: It looks like you might want std::string::find_last_of. Finds the last character equal to

lastIndexOf Confusion

由 被刻印的时光 ゝ 提交于 2019-12-07 17:10:45
问题 I really dont understand how lastIndexOf works. I could not get the usage of second optional parameter. string.lastIndexOf(searchvalue,start) searchvalue -> Required. The string to search for start -> Optional. The position where to start the search. If omitted, the default value is the length of the string var test = "mississippi"; test.lastIndexOf("ss",1) // return -1 test.lastIndexOf("ss",2) // returns 2 test.lastIndexOf("ss",5) // returns 5 Could anyone tell me the idea step by step ? Why

lastIndexOf Confusion

由 跟風遠走 提交于 2019-12-05 18:54:21
I really dont understand how lastIndexOf works. I could not get the usage of second optional parameter. string.lastIndexOf(searchvalue,start) searchvalue -> Required. The string to search for start -> Optional. The position where to start the search. If omitted, the default value is the length of the string var test = "mississippi"; test.lastIndexOf("ss",1) // return -1 test.lastIndexOf("ss",2) // returns 2 test.lastIndexOf("ss",5) // returns 5 Could anyone tell me the idea step by step ? Why first one returns -1 and second one returns 2 for example ? TIA Its because thats the starting index.

indexOf and lastIndexOf in PHP?

由 戏子无情 提交于 2019-12-03 10:37:28
问题 In Java, we can use indexOf and lastIndexOf . Since those functions don't exist in PHP, what would be the PHP equivalent of this Java code? if(req_type.equals("RMT")) pt_password = message.substring(message.indexOf("-")+1); else pt_password = message.substring(message.indexOf("-")+1,message.lastIndexOf("-")); 回答1: You need the following functions to do this in PHP: strpos Find the position of the first occurrence of a substring in a string strrpos Find the position of the last occurrence of a

How to find index of whole word in string in java

由 ぃ、小莉子 提交于 2019-11-29 17:42:58
I want to find out all starting indexes of whole word in a given string. Lets say I have a string given below. "an ancient manuscripts, another means to divide sentences into paragraphs was a line break (newline) followed by an initial at the beginning of the next paragraph. An initial is an oversize capital letter, sometimes outdented beyond the margin of text. This style can be seen, for example, in the original Old English manuscript of Beowulf. Outdenting is still used in English typography, though not commonly.[4] Modern English typography usually indicates a new paragraph by indenting

How to find index of whole word in string in java

由 我只是一个虾纸丫 提交于 2019-11-28 12:09:18
问题 I want to find out all starting indexes of whole word in a given string. Lets say I have a string given below. "an ancient manuscripts, another means to divide sentences into paragraphs was a line break (newline) followed by an initial at the beginning of the next paragraph. An initial is an oversize capital letter, sometimes outdented beyond the margin of text. This style can be seen, for example, in the original Old English manuscript of Beowulf. Outdenting is still used in English

Last index of a given substring in MySQL

由 拟墨画扇 提交于 2019-11-27 19:13:51
We can find the index of the first occurrence of a given substring in MySQL using the INSTR() function as follows. SELECT instr('Have_a_good_day', '_') AS index_position It would display 5 , the first occurrence of the specified substring which is in this case an underscore _ . I need to obtain the last occurrence of a given character (or a substring) something like the Java lastIndexOf(String str) method of the String class but I can't find any built-in function in MySQL. Is there any built-in functionality to achieve this in MySQL? curt @Marc B was close. In MySQL, following statement

Last index of a given substring in MySQL

由 我的梦境 提交于 2019-11-26 19:52:56
问题 We can find the index of the first occurrence of a given substring in MySQL using the INSTR() function as follows. SELECT instr('Have_a_good_day', '_') AS index_position It would display 5 , the first occurrence of the specified substring which is in this case an underscore _ . I need to obtain the last occurrence of a given character (or a substring) something like the Java lastIndexOf(String str) method of the String class but I can't find any built-in function in MySQL. Is there any built
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