You could use simple regex: var result = fileAsString.replace(/string to be replaced/g, ‘replacement’); So… var fs = require(‘fs’) fs.readFile(someFile, ‘utf8’, function (err,data) { if (err) { return console.log(err); } var result = data.replace(/string to be replaced/g, ‘replacement’); fs.writeFile(someFile, result, ‘utf8’, function (err) { if (err) return console.log(err); }); });
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There’s a function to find a substring within a string (find), and a function to replace a particular range in a string with another string (replace), so you can combine those to get the effect you want: bool replace(std::string& str, const std::string& from, const std::string& to) { size_t start_pos = str.find(from); if(start_pos == std::string::npos) return … Read more
I think both the fastest and most concise way to do this is to use NumPy’s built-in Fancy indexing. If you have an ndarray named arr, you can replace all elements >255 with a value x as follows: arr[arr > 255] = x I ran this on my machine with a 500 x 500 random … Read more
You want to use postgresql’s replace function: replace(string text, from text, to text) for instance : UPDATE <table> SET <field> = replace(<field>, ‘cat’, ‘dog’) Be aware, though, that this will be a string-to-string replacement, so ‘category’ will become ‘dogegory’. the regexp_replace function may help you define a stricter match pattern for what you want to … Read more
Use inline shell string replacement. Example: foo=” ” # replace first blank only bar=${foo/ /.} # replace all blanks bar=${foo// /.} See http://tldp.org/LDP/abs/html/string-manipulation.html for more details.
You can try the trim() method. String newString = oldString.trim(); Take a look at javadocs
Change table_name and field to match your table name and field in question: UPDATE table_name SET field = REPLACE(field, ‘foo’, ‘bar’) WHERE INSTR(field, ‘foo’) > 0; REPLACE (string functions) INSTR (string functions)
Specific Solution You can use a function to replace each one. var str = “I have a cat, a dog, and a goat.”; var mapObj = { cat:”dog”, dog:”goat”, goat:”cat” }; str = str.replace(/cat|dog|goat/gi, function(matched){ return mapObj[matched]; }); jsfiddle example Generalizing it If you want to dynamically maintain the regex and just add future exchanges … Read more
In java.lang.String, the replace method either takes a pair of char’s or a pair of CharSequence‘s (of which String is a subclass, so it’ll happily take a pair of String’s). The replace method will replace all occurrences of a char or CharSequence. On the other hand, the first String arguments of replaceFirst and replaceAll are … Read more