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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
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why isn't the declared PK considered as a unique constraint ? it's not like you can have a nonunique PK...
– amphibient
Sep 7 '16 at 18:14
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How to hide command output in Bash
I want to make my Bash scripts more elegant for the end user. How do I hide the output when Bash is executing commands?
7 A...
How to configure Sublime Text 2/3 to use direct Ctrl+Tab order and to create new tabs after the last
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1 little side note, if your user key bindings file is completely empty, put the above code between these: [ key bindings here ]. After one frustrating our finally found that out, so I hope that this will help somebody in the future.
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nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
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Sending a JSON to server and retrieving a JSON in return, without JQuery
...n stringify) to the server and to retrieve the resulting JSON on the user side, without using JQuery.
2 Answers
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Maven check for updated dependencies in repository
...versions on Maven Repositories, too. It is a language agnostic tool and beside Java it supports 7 other languages. Beside the simple follow/notify feature it can also directly monitor GitHub and BitBucket repositories and notify your about out-dated dependencies in your projects.
There is also a...
setNeedsLayout vs. setNeedsUpdateConstraints and layoutIfNeeded vs updateConstraintsIfNeeded
...read about autolayouts–says:
If something changes later on that invalidates one of your constraints, you should remove the constraint immediately and call setNeedsUpdateConstraints. In fact, that’s the only case where you should have to trigger a constraint update pass.
In addition, in my ...
How to duplicate a git repository? (without forking)
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@Thomas I just did this and yes, it preserved all of my history in the copy. Note that after you push and cd into the new repo, there's still nothing there because you've pushed to the remote, so you need to do a pull
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How to subtract a day from a date?
... Python datetime object is timezone-aware than you should be careful to avoid errors around DST transitions (or changes in UTC offset for other reasons):
from datetime import datetime, timedelta
from tzlocal import get_localzone # pip install tzlocal
DAY = timedelta(1)
local_tz = get_localzone() ...
How to make overlay control above all other controls?
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If you are using a Canvas or Grid in your layout, give the control to be put on top a higher ZIndex.
From MSDN:
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" WindowTitle="ZIndex Sample">
<Canvas>
<Rectangle ...