阵列中的裁剪空格

Question

我一直试图在由几乎所有元素元素组成的长数组中调整空白空间，但无法找到实现此功能的函数，我确实阅读了纵倾上的文档，但发现没有一个与该数组一起工作。

这是我的长数组

let mut elements = ["Please start with 1"," Hydrogen"," Helium","Lithium"," Beryllium","Boron","Carbon"," Nitrogen","Oxygen","Fluorine","Neon","Sodium","Magnesium","Aluminium","Silicon","Phosphorus","Sulfur"," Chlorine","Argon","Potassium","Calcium "," Scandium","Titanium","Vanadium",
                "Chromium","Manganese"," Iron","Cobalt","Nickel","Copper","Zinc","Gallium","Germanium","Arsenic"," Selenium","Bromine","Krypton","Rubidium","Strontium","  Yttrium","Zirconium ","Niobium ","Molybdenum ","Technetium ","Ruthenium ","Rhodium","Palladium","Silver",
                "Cadmium "," Indium ","Tin","Antimony"," Tellurium","Iodine","Xenon","Cesium","Barium","Lanthanum","Cerium"," Praseodymium","Neodymium"," Promethium "," Samarium ","Europium "," Gadolinium","Terbium "," Dysprosium ","Holmium "," Erbium","Thulium","Ytterbium","Lutetium","Hafnium",
                "Tantalum "," Tungsten","Rhenium ","Osmium ","Iridium ","Platinum","Gold","Mercury"," Thallium","Lead ","Bismuth"," Polonium" ,"Astatine","Radon ","Francium ","Radium"," Actinium","Thorium"," Protactinium","Uranium","Neptunium","Plutonium","Americium","Curium","Berkelium","Californium"];

现在，在一些元素中，有一些空白空间破坏了输出。

有什么方法可以在数组中修剪空白空间吗？

Answer 1

只需将map与trim一起用作：

let trimmed = elements.map(str::trim);

游乐场

请注意，这将生成一个新数组。

Answer 2

您可以通过修改每个适当的元素来实现这一点，而无需构建一个新的数组。

for word in elements.iter_mut() {
    *word = word.trim();
}

或使用迭代器

elements.iter_mut().for_each(|word| *word = word.trim());