修剪数组中的空格

Question

我一直在尝试 trim 我的长数组中的空格，它由几乎所有周期性 table 元素组成，但找不到执行此操作的函数，我确实阅读了文档trim 但发现其中 none 个与数组一起工作。

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空格会破坏输出。

有什么方法可以 trim 数组中的空格？

Answer 1

只需使用 map 和 trim 作为：

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

Playground

请注意，这将构建一个新数组。

Answer 2

您可以在不构建新数组的情况下通过修改每个元素来完成此操作。

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

或者使用迭代器

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

修剪数组中的空格

Trimming whitespace in Array

arrays

whitespace

trim

rust