![]() ![]() Also choose Mailbox > Erase Deleted Items. If you use the Mail app for your email, choose Mailbox > Erase Junk Mail from the menu bar in Mail.Delete files in your Downloads folder. Open this folder from the Dock, or by choosing Go > Downloads from the menu bar in the Finder.Delete music, movies, podcasts, or other media, especially if it's media that you can stream or download again as needed.You can also delete files that you no longer need. #include īy eliminating the need for storage of a string, not only does the entire program become much, much shorter, but theoretically also much more efficient.If you have another storage device, such as an external drive connected to your Mac, you can move files to that device. Media files such as photos and videos can use a lot of storage space, so you can take steps such as these: Just treat it as though it's a stream of characters, discarding the spaces as you come across them. If that's the case, I would question why it ever needs to become a string in the first place. stdin) and is bound to be written to another file (e.g. Perhaps your string comes from a file (e.g. We need to consider your entire algorithm, what actual problem you're trying to solve, in order to suggest the simplest and most optimal methods. Not all strings come from string literals, right? Supposing this string you want spaces removed from doesn't come from a string literal, we need to consider the source and destination of your string. For example, use your editor to 'find and replace' "hello world" with "helloworld", and presto! ![]() The easiest and most efficient way to remove spaces from a string is to simply remove the spaces from the string literal. This allows more efficient optimization, since the compiler can then copy straight from source to destination without temporary memory in between. ![]() When copying something, you can however optimize a bit by declaring both pointers as restrict, which is a contract between the programmer and the compiler, where the programmer guarantees that the destination and source are not the same address. Yet it will yield pretty much the same machine code as the more obscure one-liner versions. It will make a very poor candidate for the IOCCC. It does not try to squeeze in as many operators as possible on a single line. The algorithm should only focus on doing its intended work. It always null terminates the destination string. It does not crash if the source string contains nothing but a null termination. In this code, the source string "str_untrimmed" is left untouched, which is guaranteed by using proper const correctness. What I would do: void remove_spaces (char* restrict str_trimmed, const char* restrict str_untrimmed) Instead, make the null termination insertion explicit, to show that you haven't just managed to get it right by accident. For this reason, you get no bonus points for hiding the insertion of null termination of the destination string, by letting it be part of the copying code.It is rather the opposite, a good C program contains readable code (always the single-most important quality) without sacrificing program efficiency (somewhat important). ![]()
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