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Rails find record with zero has_many records associated [duplicate]
...92465 - also answers your question about constructing the inverse and does all this with Arel
– novemberkilo
Sep 29 '13 at 16:06
5
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How do I see the commit differences between branches in git?
... branch-X and have added a couple more commits on top of it. I want to see all the differences between MASTER and the branch that I am on in terms of commits. I could just do a
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How to kill/stop a long SQL query immediately?
...e red cancel button, but it has not stopped for the past 10 minutes. It usually stops within 3 minutes.
11 Answers
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How to find the statistical mode?
...max, and returns the first-appearing value of the set of modes. To return all modes, use this variant (from @digEmAll in the comments):
Modes <- function(x) {
ux <- unique(x)
tab <- tabulate(match(x, ux))
ux[tab == max(tab)]
}
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Merging without whitespace conflicts
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git merge -Xignore-all-space
Or (more precise)
git merge -Xignore-space-change
should be enough to ignore all space related conflicts during the merge.
See git diff:
--ignore-space-change
Ignore changes in amount of whitespace.
T...
Javascript web app and Java server, build all in Maven or use Grunt for web app?
...'t great and writing your own plugins can be a little tricky. When I originally wrote this post JAWR was in the middle of a 4 year hiatus but is now back under active development as of Jan 2014. If you choose to investigate Java Tools this is worth investigation.
Node Based Tooling (integrated wit...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
...andard library in the main Python distribution.
The intention is to make all code that goes in the official python distribution consistently formatted (I hope we can agree that this is universally a Good Thing™).
Since the decision between spaces and tabs for an individual programmer is a) real...
Disable/turn off inherited CSS3 transitions
...out transitions.
Edited to note that @Frédéric Hamidi's answer, using all (for Opera, at least) is far more concise than listing out each individual property-name that you don't want to have transition.
Updated JS Fiddle demo, showing the use of all in Opera: -o-transition: all 0 none, followi...
MySQL: multiple tables or one table with many columns?
...elational database to minimize redundancy and dependency. Normalization usually involves dividing large tables into smaller (and less redundant) tables and defining relationships between them. The objective is to isolate data so that additions, deletions, and modifications of a field can be made in ...
How do I remedy “The breakpoint will not currently be hit. No symbols have been loaded for this docu
...ugging, as soon as you've arrived at a breakpoint or used Debug > Break All, use Debug > Windows > Modules. You'll see a list of all the assemblies that are loaded into the process. Locate the one you want to get debug info for. Right-click it and select Symbol Load Information. You'll ...