<style>

html, body, .ui-content {
background-color: #333;
color: #ddd;
}

body > .ui-infobar {
display: none;
}

.ui-view-area > .ui-infobar {
display: block;
}

.markdown-body h1{
color: #9CCEF2;
}
.markdown-body h2,
.markdown-body h3{
color: #B1D6CA;
}
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
color: #ddd;
}

.markdown-body h1,
.markdown-body h2 {
border-bottom-color: #ffffff69;
}

.markdown-body h1 .octicon-link,
.markdown-body h2 .octicon-link,
.markdown-body h3 .octicon-link,
.markdown-body h4 .octicon-link,
.markdown-body h5 .octicon-link,
.markdown-body h6 .octicon-link {
color: #fff;
}

.markdown-body img {
background-color: transparent;
}

.ui-toc-dropdown .nav>.active:focus>a, .ui-toc-dropdown .nav>.active:hover>a, .ui-toc-dropdown .nav>.active>a {
color: white;
border-left: 2px solid white;
}

.expand-toggle:hover,
.expand-toggle:focus,
.back-to-top:hover,
.back-to-top:focus,
.go-to-bottom:hover,
.go-to-bottom:focus {
color: white;
}

.ui-toc-dropdown {
background-color: #333;
}

.ui-toc-label.btn {
background-color: #191919;
color: white;
}

.ui-toc-dropdown .nav>li>a:focus,
.ui-toc-dropdown .nav>li>a:hover {
color: white;
border-left: 1px solid white;
}

.markdown-body blockquote {
color: #bcbcbc;
}

.markdown-body table tr {
background-color: #5f5f5f;
}

.markdown-body table tr:nth-child(2n) {
background-color: #4f4f4f;
}

.markdown-body code,
.markdown-body tt {
color: #eee;
background-color: rgba(230, 230, 230, 0.36);
}

a,
.open-files-container li.selected a {
color: #5EB7E0;
}

</style>
###### tags: `雜~~瓦魯多~~筆記`

# 刪除字串尾端字元ㄉ百百種方法

目標：把字串str尾端刪除1個字元

[TOC]

## substr()
用法：
str.substr(i, n);
由str從i開始取n個字元的子字串。

str = str.substr(0, str.size()-1);

## erase()
用法：
str.erase(n);
刪除str中第n個字元。

str.erase(str.size()-1);

## pop_back()
用法：
str.pop_back();
刪除str最後一個字元。

str.pop_back();

## resize()

用法：
str.resize(n);
將str的長度設為n。

str.resize(str.size()-1);