NSString *string = @”hello bla bla”; if ([string rangeOfString:@”bla”].location == NSNotFound) { NSLog(@”string does not contain bla”); } else { NSLog(@”string contains bla!”); } The key is noticing that rangeOfString: returns an NSRange struct, and the documentation says that it returns the struct {NSNotFound, 0} if the “haystack” does not contain the “needle”. And if … Read more
is is identity testing, == is equality testing. what happens in your code would be emulated in the interpreter like this: >>> a=”pub” >>> b = ”.join([‘p’, ‘u’, ‘b’]) >>> a == b True >>> a is b False so, no wonder they’re not the same, right? In other words: a is b is the … Read more
You can use the @ symbol in front of a string to form a verbatim string literal: string query = @”SELECT foo, bar FROM table WHERE id = 42″; You also do not have to escape special characters when you use this method, except for double quotes as shown in Jon Skeet’s answer.
If you look at the docs for bytes, it points you to bytearray: bytearray([source[, encoding[, errors]]]) Return a new array of bytes. The bytearray type is a mutable sequence of integers in the range 0 <= x < 256. It has most of the usual methods of mutable sequences, described in Mutable Sequence Types, as … Read more
To remove all whitespace surrounding a string, use .strip(). Examples: >>> ‘ Hello ‘.strip() ‘Hello’ >>> ‘ Hello’.strip() ‘Hello’ >>> ‘Bob has a cat’.strip() ‘Bob has a cat’ >>> ‘ Hello ‘.strip() # ALL consecutive spaces at both ends removed ‘Hello’ Note that str.strip() removes all whitespace characters, including tabs and newlines. To remove only … Read more
All current browsers have native JSON support built in. So as long as you’re not dealing with prehistoric browsers like IE6/7 you can do it just as easily as that: var j = { “name”: “binchen” }; console.log(JSON.stringify(j));
All browsers since IE9+ have trim() method for strings: ” \n test \n “.trim(); // returns “test” here For those browsers who does not support trim(), you can use this polyfill from MDN: if (!String.prototype.trim) { (function() { // Make sure we trim BOM and NBSP var rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g; String.prototype.trim = function() { return … Read more
The simplest way to do it (if you’re not worried about special Unicode characters) is to call toUpperCase: var areEqual = string1.toUpperCase() === string2.toUpperCase();
var lowerCaseName = “Your Name”.toLowerCase();
Getting the name of the file without the extension: import os print(os.path.splitext(“/path/to/some/file.txt”)[0]) Prints: /path/to/some/file Documentation for os.path.splitext. Important Note: If the filename has multiple dots, only the extension after the last one is removed. For example: import os print(os.path.splitext(“/path/to/some/file.txt.zip.asc”)[0]) Prints: /path/to/some/file.txt.zip See other answers below if you need to handle that case.