The replaceAll method is attempting to match the String literal [] which does not exist within the String try replacing these items separately. String str = “[Chrissman-@1]”; str = str.replaceAll(“\\[“, “”).replaceAll(“\\]”,””);
Using a regular expression you can count the number of lines as str.split(/\r\n|\r|\n/).length Alternately you can try split method as below. var lines = $(“#ptest”).val().split(“\n”); alert(lines.length); working solution: http://jsfiddle.net/C8CaX/
I used a List Comprehension to cut a huge DataFrame into blocks of 100’000: size = 100000 list_of_dfs = [df.loc[i:i+size-1,:] for i in range(0, len(df),size)] or as generator: list_of_dfs = (df.loc[i:i+size-1,:] for i in range(0, len(df),size))
Use string.Split(char []) string strings = “4,6,8\n9,4”; string [] split = strings .Split(new Char [] {‘,’ , ‘\n’ }); EDIT Try following if you get any unnecessary empty items. String.Split Method (String[], StringSplitOptions) string [] split = strings .Split(new Char [] {‘,’ , ‘\n’ }, StringSplitOptions.RemoveEmptyEntries); EDIT2 This works for your updated question. Add all … Read more
You can explode the string by commas, and then explode each of those values by x, inserting the result values from that into the two arrays: $str = “20×9999,24×65,40×5”; $array1 = array(); $array2 = array(); foreach (explode(‘,’, $str) as $key => $xy) { list($array1[$key], $array2[$key]) = explode(‘x’, $xy); } Alternatively, you can use preg_match_all, matching … Read more
After setting the row into the istringstream… separate.str(row); … reset it by calling separate.clear(); This clears any iostate flags that are set in the previous iteration or by setting the string. http://www.cplusplus.com/reference/iostream/ios/clear/
As documented: The Length property returns the number of Char objects in this instance, not the number of Unicode characters. The reason is that a Unicode character might be represented by more than one Char. Use the System.Globalization.StringInfo class to work with each Unicode character instead of each Char. Getting length: new System.Globalization.StringInfo(“友𠂇又”).LengthInTextElements Getting each … Read more
You should split on the character set [+-/*] after removing the whitespace from the string: >>> import re >>> def mysplit(mystr): … return re.split(“([+-/*])”, mystr.replace(” “, “”)) … >>> mysplit(“A7*4”) [‘A7’, ‘*’, ‘4’] >>> mysplit(“Z3+8”) [‘Z3’, ‘+’, ‘8’] >>> mysplit(“B6 / 11”) [‘B6′, “https://stackoverflow.com/”, ’11’] >>>