multiple-columns

问题 How to do this in pandas: I have a function extract_text_features on a single text column, returning multiple output columns. Specifically, the function returns 6 values. The function works, however there doesn\'t seem to be any proper return type (pandas DataFrame/ numpy array/ Python list) such that the output can get correctly assigned df.ix[: ,10:16] = df.textcol.map(extract_text_features) So I think I need to drop back to iterating with df.iterrows() , as per this? UPDATE: Iterating with

问题 Should be pretty basic, but I can\'t get it to work. I have this code to iterate over a mysqli query: while($row = mysqli_fetch_array($result)) { $posts[] = $row[\'post_id\'].$row[\'post_title\'].$row[\'content\']; } It works and returns: Variable #1: (Array, 3 elements) ↵ 0 (String): \"4testtest\" (9 characters) 1 (String): \"1Hello world!Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!\" (99 characters) 2 (String): \"2Sample PageThis is an example page.

问题 This question already has answers here : CSS - Equal Height Columns? (11 answers) Closed 4 years ago . How to get your div to reach all the way down? How to fill up the vertical space of parent div? How to get equal length columns without using background images? I spent a couple days googling and dissecting code to understand how to accomplish equal length columns as easy and efficient as possible. This is the answer I came up with and I wanted to share this knowledge with the community copy

问题 I\'m using Entity Framework 5.0 Code First; public class Entity { [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)] public string EntityId { get; set;} public int FirstColumn { get; set;} public int SecondColumn { get; set;} } I want to make the combination between FirstColumn and SecondColumn as unique. Example: Id FirstColumn SecondColumn 1 1 1 = OK 2 2 1 = OK 3 3 3 = OK 5 3 1 = THIS OK 4 3 3 = GRRRRR! HERE ERROR Is there anyway to do that? 回答1: With Entity Framework 6.1, you can

问题 I\'m making a responsive layout with a top fixed navbar. Underneath I have two columns, one for a sidebar (3), and one for content (9). Which on desktop looks like this navbar [3][9] When I resize to mobile the navbar is compressed and hidden, then the sidebar is stacked on top of the content, like this: navbar [3] [9] I would like the main content at the top, so I need to change the order on mobile to this: navbar [9] [3] I found this article which covers the same points, but the accepted

问题 I want a two-column div layout, where each one can have variable width e.g. div { float: left; } .second { background: #ccc; } <div>Tree</div> <div class=\"second\">View</div> I want the \'view\' div to expand to the whole width available after \'tree\' div has filled needed space. Currently my \'view\' div is resized to content it contains It will also be good if both divs take up whole height Not duplicate disclaimer: Expand div to max width when float:left is set because there the left one