character-replacement

问题 I am trying to replace substrings of string elements within a vector with blank spaces. Below are the vectors we are considering: test <- c("PALMA DE MALLORCA", "THE RICH AND THE POOR", "A CAMEL IN THE DESERT", "SANTANDER SL", "LA") lista <- c("EL", "LA", "ES", "DE", "Y", "DEL", "LOS", "S.L.", "S.A.", "S.C.", "LAS", "DEL", "THE", "OF", "AND", "BY", "S", "L", "A", "C", "SA", "SC", "SL") Then if we apply the mgsub function as it is, we get the following output: library(qdap) mgsub(lista, "",

问题 I am trying to replace substrings of string elements within a vector with blank spaces. Below are the vectors we are considering: test <- c("PALMA DE MALLORCA", "THE RICH AND THE POOR", "A CAMEL IN THE DESERT", "SANTANDER SL", "LA") lista <- c("EL", "LA", "ES", "DE", "Y", "DEL", "LOS", "S.L.", "S.A.", "S.C.", "LAS", "DEL", "THE", "OF", "AND", "BY", "S", "L", "A", "C", "SA", "SC", "SL") Then if we apply the mgsub function as it is, we get the following output: library(qdap) mgsub(lista, "",

问题 I am hoping this is a simple one, though it seems it often isn't... I am working with XLST 1.0 and I have a string which I need to translate . This string is a user-entered text field. It contains several smaller strings separated by a delimiter. (In this case, it's "|".) The length of this string and the number of special characters varies widely. (This field is similar to a CSV list, however, rather than using a comma as the delimiter, the "|" is the delimiter.) I need to learn how to

问题 How fast can I replace characters in a string? So the background on this question is this: We have a couple of applications that communicate with each other and with clients' applications through sockets. These socket messages contain non-printable characters (e.g. chr(0)) which need to get replaced with a predetermined string (e.g "{Nul}"}, because the socket messages are kept in a log file. On a side note, not every log message will need to have characters replaced. Now I started off on

问题 I have a string, let\'s say Hello world and I need to replace the char at index 3. How can I replace a char by specifying a index? var str = \"hello world\"; I need something like str.replaceAt(0,\"h\"); 回答1: In JavaScript, strings are immutable , which means the best you can do is create a new string with the changed content, and assign the variable to point to it. You'll need to define the replaceAt() function yourself: String.prototype.replaceAt=function(index, replacement) { return this