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How to set tbody height with overflow scroll

... ,tr td{ border:1px solid red } tbody { display:block; height:50px; overflow:auto; } thead, tbody tr { display:table; width:100%; table-layout:fixed;/* even columns width , fix width of table too*/ } thead { width: calc( 100% - 1em )/* scrollbar is average 1em/16px wi...
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Remove columns from dataframe where ALL values are NA

... 160 Try this: df <- df[,colSums(is.na(df))<nrow(df)] ...
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In pure functional languages, is there an algorithm to get the inverse function?

... 10 Answers 10 Active ...
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Why are arrays of references illegal?

... answered Jul 22 '09 at 10:19 Kirill V. LyadvinskyKirill V. Lyadvinsky 87.3k2222 gold badges125125 silver badges208208 bronze badges ...
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How to vertically center content with variable height within a div?

... Just add position: relative; top: 50%; transform: translateY(-50%); to the inner div. What it does is moving the inner div's top border to the half height of the outer div (top: 50%;) and then the inner div up by half its height (transform: translateY(-50%)...
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How can I add a vertical scrollbar to my div automatically?

... make the overflow: auto; property work. For testing purpose, add height: 100px; and check. and also it will be better if you give overflow-y:auto; instead of overflow: auto;, because this makes the element to scroll only vertical but not horizontal. float:left; width:1000px; overflow-y: auto; heig...
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Fixed position but relative to container

... 420 Short answer: no. (It is now possible with CSS transform. See the edit below) Long answer: The ...
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Display / print all rows of a tibble (tbl_df)

... You could also use print(tbl_df(df), n=40) or with the help of the pipe operator df %>% tbl_df %>% print(n=40) To print all rows specify tbl_df %>% print(n = Inf) share ...
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Which @NotNull Java annotation should I use?

... +50 Since JSR 305 (whose goal was to standardize @NonNull and @Nullable) has been dormant for several years, I'm afraid there is no good a...
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App Inventor 2 列表代码块 · App Inventor 2 中文网

...在列表中的位置,从 1 开始,如果不在列表中,则返回 0。 选择列表中索引值对应的列表项 返回给定列表中给定索引处的项目,索引从 1 开始。 在列表的某个位置插入列表项 将项目插入...