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Validation failed for one or more entities while saving changes to SQL Server Database using Entity
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You can also get this error if any seed data is not fully satisfying model attribute rules (like Required). I've added an answer with a bit more info.
– dan richardson
Dec 13 '12 at 10:52
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Android: Background Image Size (in Pixel) which Support All Devices
... is no set size for hdpi, xhdpi, etc. because each manufacture can make a different sized phone/tablet, unlike IOS where only apple makes it. Look at section on range: developer.android.com/guide/practices/…
– toidiu
Mar 10 '15 at 4:28
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Moving UITabBarItem Image down?
...s the top of the tab to accommodate the title underneath. My question is: if you want to have a tabBar with just an image and no title is there a way to move the image down so it centers better within the tab?
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How can I configure Logback to log different levels for a logger to different destinations?
How can I configure Logback to log different levels for a logger to different destinations?
12 Answers
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How to query nested objects?
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What if let's say I have a key which contains "domain.com", this will not work: domains.domain.com. Is there any workaround for this scenario (without altering the domain.com to something else e.g domain_com)?
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Rails auto-assigning id that already exists
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@Websitescenes, if one has a SERIAL column in PostgreSQL (a serial column is one in which the default value is the next value in a sequence), then populates the table with hard values in that column, the sequence will not be automatically up...
Postgres: Distinct but only for one column
...l1, col2
from names
This will return any of the rows containing the name. If you want to control which of the rows will be returned you need to order:
select distinct on (name)
name, col1, col2
from names
order by name, col1
Will return the first row when ordered by col1.
distinct on:
SELECT ...
What is the largest TCP/IP network port number allowable for IPv4?
...sions only going from 1024-5000 for dynamic ports.And even then, who knows if that ever even happened,since no program has ever bothered to report to anybody that it couldn't get a dynamic port, neither has windows.So it's a thoretical problem not even really caused by the 65536 number.The Web brows...
The most accurate way to check JS object's type?
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The JavaScript specification gives exactly one proper way to determine the class of an object:
Object.prototype.toString.call(t);
http://bonsaiden.github.com/JavaScript-Garden/#types
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Why is git prompting me for a post-pull merge commit message?
...-fetch-and-merge You should be avoiding git pull; use git merge --ff-only if you are just trying to update and you don't think you have any local changes; use git merge --no-ff if you are actually trying to merge a branch in.
– Glyph
Apr 24 '13 at 22:00
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