Edit: In c++17 or later from_chars is preferred. See here for more: https://topanswers.xyz/cplusplus?q=724#a839 For a given string str there are several ways to accomplish this each with advantages and disadvantages. I’ve written a live example here: https://ideone.com/LO2Qnq and discuss each below: strtol As suggested here strtol‘s out-parameter can be used to get the number of … Read more
your_float = [your_string floatValue]; EDIT: try this: NSLog(@”float value is: %f”, your_float);
serialize() is the function you are looking for. It will return a string representation of its input array or object in a PHP-specific internal format. The string may be converted back to its original form with unserialize(). But beware, that not all objects are serializable, or some may be only partially serializable and unable to … Read more
Remove the slashes: String json = {“phonetype”:”N95″,”cat”:”WP”}; try { JSONObject obj = new JSONObject(json); Log.d(“My App”, obj.toString()); } catch (Throwable t) { Log.e(“My App”, “Could not parse malformed JSON: \”” + json + “\””); }
>>> a=”1,000,000″ >>> int(a.replace(‘,’, ”)) 1000000 >>>
parseInt(“123qwe”) returns 123 Number(“123qwe”) returns NaN In other words parseInt() parses up to the first non-digit and returns whatever it had parsed. Number() wants to convert the entire string into a number, which can also be a float BTW. EDIT #1: Lucero commented about the radix that can be used along with parseInt(). As far … Read more
How can I convert a string to boolean in JavaScript?