limit

问题 I have been trying to limit my blog content text with str_limit that works fine until I apply limit of characters on it. kindly see what is missing in the code of my blade file: {!! str_limit($blog->content) !!} works fine with the default limit, showing limited text on the view. But when I apply any custom limit i.e. {!! str_limit($blog->content, 20) !!} it do not show any text on the view. 回答1: The str_limit function has been deprecated, but you can use Str::limit($text) Laravel doc. In the

问题 I am using R (3.0.1) and ggplot2 (ggplot2_0.9.3.1) with geom_tile and scale_fill_gradient . I am using the ' limits ' option in scale_fill_gradient , as shown below. The problem is that I want to get rid of the grey background that appears outside of the specified limits. I want that background to be white just like the rest of the graph due to theme_bw() . I have been unable to figure out how to do it. Thanks. pp <- function (n,r=4) { x <- seq(-r*pi, r*pi, len=n) df <- expand.grid(x=x, y=x)

问题 I am using R (3.0.1) and ggplot2 (ggplot2_0.9.3.1) with geom_tile and scale_fill_gradient . I am using the ' limits ' option in scale_fill_gradient , as shown below. The problem is that I want to get rid of the grey background that appears outside of the specified limits. I want that background to be white just like the rest of the graph due to theme_bw() . I have been unable to figure out how to do it. Thanks. pp <- function (n,r=4) { x <- seq(-r*pi, r*pi, len=n) df <- expand.grid(x=x, y=x)

问题 I am using R (3.0.1) and ggplot2 (ggplot2_0.9.3.1) with geom_tile and scale_fill_gradient . I am using the ' limits ' option in scale_fill_gradient , as shown below. The problem is that I want to get rid of the grey background that appears outside of the specified limits. I want that background to be white just like the rest of the graph due to theme_bw() . I have been unable to figure out how to do it. Thanks. pp <- function (n,r=4) { x <- seq(-r*pi, r*pi, len=n) df <- expand.grid(x=x, y=x)

问题 I am using R (3.0.1) and ggplot2 (ggplot2_0.9.3.1) with geom_tile and scale_fill_gradient . I am using the ' limits ' option in scale_fill_gradient , as shown below. The problem is that I want to get rid of the grey background that appears outside of the specified limits. I want that background to be white just like the rest of the graph due to theme_bw() . I have been unable to figure out how to do it. Thanks. pp <- function (n,r=4) { x <- seq(-r*pi, r*pi, len=n) df <- expand.grid(x=x, y=x)

问题 I've got a table and I want a query that returns the last 10 records created plus the record who's id is x. I'm trying to do - SELECT * FROM catalog_productimage ORDER BY date_modified LIMIT 10 UNION SELECT * FROM catalog_productimage WHERE id=5; But it doesn't look like I can put LIMIT in there before UNION . I've tried adding another column and using it for sorting - SELECT id, date_modified, IF(false, 1, 0) as priority FROM catalog_productimage UNION SELECT, id, date_modified, IF(true, 1,

问题 I've got a table and I want a query that returns the last 10 records created plus the record who's id is x. I'm trying to do - SELECT * FROM catalog_productimage ORDER BY date_modified LIMIT 10 UNION SELECT * FROM catalog_productimage WHERE id=5; But it doesn't look like I can put LIMIT in there before UNION . I've tried adding another column and using it for sorting - SELECT id, date_modified, IF(false, 1, 0) as priority FROM catalog_productimage UNION SELECT, id, date_modified, IF(true, 1,

问题 I've got a table and I want a query that returns the last 10 records created plus the record who's id is x. I'm trying to do - SELECT * FROM catalog_productimage ORDER BY date_modified LIMIT 10 UNION SELECT * FROM catalog_productimage WHERE id=5; But it doesn't look like I can put LIMIT in there before UNION . I've tried adding another column and using it for sorting - SELECT id, date_modified, IF(false, 1, 0) as priority FROM catalog_productimage UNION SELECT, id, date_modified, IF(true, 1,

问题 I am learning Firebase and I might use it in production. I can not find how to prevent a logged in user to edit javascript code and trigger thousands of reads per day automatically and that I will have to pay for. As far as I know, any user who would like to increase my firebase bill could set a timer by editing javascript code and read and write every 4 seconds where he can in the firestore database. How can you prevent a user read rate per day or hour? 回答1: There is no way to set a read

问题 Drupal uses db_query_range() for the reason that not all databases support LIMIT , can you name a few? 回答1: DB2, MSSQL, Oracle, and Informix all do not support LIMIT. As a matter of fact, it's not in the SQL standard. (The standard one is "FETCH FIRST" indeed) Here is a good source for SQL comparisons: http://troels.arvin.dk/db/rdbms/#select-limit 回答2: Microsoft SQL Server does not support LIMIT . It supports the TOP statement which can be used to accomplish similar things. The primary