truncate

This question already has answers here : JodaTime equivalent of DateUtils.truncate() (4 answers) I am pulling timestamps from a file that I want to create a new DateTime for, but I want to create the DateTime at the floor of the hour (or any Joda Period will do). How Can I do this? Wohoo, found it. Simple like everything in Joda once I traced down the calls. DateTime dt = new DateTime().hourOfDay().roundFloorCopy(); 来源： https://stackoverflow.com/questions/1207957/how-do-i-create-a-new-joda-datetime-truncated-to-the-last-hour

I have UILabel , which contains dynamic text. Sometimes text is too long to be shown and thus automagically truncated . How do I find out width of the visible part of truncated text? sizeThatFits returns length of untruncated text , so at the moment I can only detect when truncation will be done. Need to know how much is visible, including those three dots. Any tips? Clarification : when text is truncated, it's usually shorter than UILabel width. Robot K is correct. If I was you I'd do the following: UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 24)]; label.text = @

I know that I can efficiently truncate a file and remove bytes from the end of the file. Is there a corresponding efficient way to truncate files by deleting content from the beginning of the file to a point in the middle of the file? As I read the question you are asking to remove content from a file starting from the beginning of the file. In other words you wish to delete content at the start of the file and shift the remaining content down. This is not possible. You can only truncate a file from the end, not from the beginning. You will need to copy the remaining content into a new file,

I'm quite long description that I want to truncate using truncate helper. So i'm using the: truncate article.description, :length => 200, :omission => ' ...' The problem is that I want to use more as a clickable link so in theory I could use this: truncate article.description, :length => 200, :omission => "... #{link_to('[more]', articles_path(article)}" Omission text is handled as unsafe so it's escaped. I tried to make it html_safe but it didn't work, instead of link [more] my browser is still showing the html for that link. Is there any way to force truncate to print omission link instead

I have a self-referential MySQL table with a recursive parent_id: CREATE TABLE `recursive` ( `id` int(11) NOT NULL auto_increment, `parent_id` int(11) default NULL, `name` varchar(100) NOT NULL, PRIMARY KEY (`id`), KEY `data_categorysource_parent_id` (`parent_id`), CONSTRAINT `parent_id_refs_id_627b4293` FOREIGN KEY (`parent_id`) REFERENCES `data_categorysource` (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 During testing, I want to empty it but TRUNCATE fails: TRUNCATE `recursive` /* SQL Error: Cannot delete or update a parent row: a foreign key constraint fails... I currently have to manually

I want to know if it is possible to let compiler issue a warning/error for code as following: Note: 1. Yea, it is bad programming style and we should avoid such cases - but we are dealing with legacy code and hope compiler can help identify such cases for us.) 2. I prefer a compiler option (VC++) to disable or enable object slicing, if there is any. class Base{}; class Derived: public Base{}; void Func(Base) { } //void Func(Derived) //{ // //} //main Func(Derived()); Here if I comment out the second function, the first function would be called - and the compiler (both VC++ and Gcc) feels

I have this testingdatabase which, by now, is stuffed with junk. Now I've done a few Table.destroy_all commands in the rails console which deletes all records and dependencies which is awesome. However; I'd like to truncate everything so the ID's etc. start at 1 again. Is there any way in Rails 3? Ravi Sankar Raju The accepted answer only works if you need to recreate the whole database. To drop a single table (with the callbacks) and to get the IDs to start from 1: Model.destroy_all # Only necessary if you want to trigger callbacks. ActiveRecord::Base.connection.execute("TRUNCATE #{table_name

I want to truncate a string as follows: input: string = "abcd asfsa sadfsaf safsdaf aaaaaaaaaa aaaaaaaaaa dddddddddddddd" output: string = "abcd asfsa sadfsaf safsdaf aa...ddddd" Veger Take a look at truncate , it partially does want you want. If you test whether it got trunctated or not, you could add some of the last part back after the truncated part. truncate("Once upon a time in a world far far away") # => "Once upon a time in a world..." truncate("Once upon a time in a world far far away", :length => 17) # => "Once upon a ti..." truncate("Once upon a time in a world far far away",