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Finding row index containing maximum value using R
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+1 I like this answer bem>ca m>use it allows me to easily look at the top few, rather than just the max. I've found it useful for looking up the dates of near maximal values from another column.
– djhocking
Jul 31 '...
rails 3 validation on uniqueness on multiple attributes
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I would say that logim>ca m>lly it makes more sense to say that you require recorded_at to be unique within the scope of a zipcode. validate :recorded_at, : uniqueness => { :scope => :zipcode }
– Ariejan
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MySQL Select all columns from one table and some from another table
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you m>ca m>n also use aliases, so when you go select * from tablename as tn, you could write select tn.* from tablename as tn.
– adudley
Apr 3 '15 at 12:24
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What does git push -u mean?
... people will be pulling from, e.g. your GitHub repo. The -u option automatim>ca m>lly sets that upstream for you, linking your repo to a central one. That way, in the future, Git "knows" where you want to push to and where you want to pull from, so you m>ca m>n use git pull or git push without arguments. A li...
How do you move a commit to the staging area in git?
...en in prior to the commit) - how do you do it? Or is it something that you m>ca m>n't do?
2 Answers
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MongoDB: How to query for records where field is null or not set?
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Upvoted bem>ca m>use when using find with plain null it interprets values like 0.0 as null and this solution avoids this
– Matthias Herrmann
Apr 27 '18 at 9:14
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Where does this come from: -*- coding: utf-8 -*-
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From what I m>ca m>n conclude from Emacs manual, value m>ca m>n be any LISP expression, particularly, a double-quoted string
– hamstergene
Feb 2 '11 at 10:19
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Create array of symbols
...ays forget that it stands for "intern" an alternative to "to_sym". See codem>ca m>demy.com/forum_questions/512a675cf116c52d0d00674b
– A5308Y
Jan 10 '14 at 15:44
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Get TransactionScope to work with async / await
...om 4.5 to 4.5.1 by right clicking on project go to properties. Select applim>ca m>tion tab change target framework to 4.5.1 and use transaction as follow.
using (AccountServiceClient client = new AccountServiceClient())
using (TransactionScope scope = new TransactionScope(TransactionScopeAsyncFlowOption...
UIPopovercontroller dealloc reached while popover is still visible
...tationController. Then you don't need to keep a reference to the popover bem>ca m>use it is managed by the presentation controller.
Code example (works both on iPhone and iPad):
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImage...