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SqlException from Entity Framework - New transaction is not allowed because there are other threads
...eadache too. I almost fell off my chair when I found the problem! I understand the technical reasons behind the problem, but this isn't intuitive and it isn't helping the developer to fall into the "pit of success" blogs.msdn.com/brada/archive/2003/10/02/50420.aspx
– Doctor Jon...
Network usage top/htop on Linux
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jnettop is another candidate.
edit: it only shows the streams, not the owner processes.
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How to have jQuery restrict file types on upload?
...would like to have jQuery limit a file upload field to only jpg/jpeg, png, and gif. I am doing backend checking with PHP already. I am running my submit button through a JavaScript function already so I really just need to know how to check for the file types before submit or alert.
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What's the difference between CSS classes .foo.bar (without space) and .foo .bar (with space) [dupli
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I think you got a slight misunderstanding what the first one means.
.element .symbol {}
Means that those CSS settings are applied to any HTML element with the class .symbol that is inside an element with the class .element.
<div class="element">
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ActiveRecord, has_many :through, and Polymorphic Associations
...owever, is there any way to accomplish this these days without source_type and two separate associations?
– Emeka
Feb 27 '16 at 15:27
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What's the name for hyphen-separated case?
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There isn't really a standard name for this case convention, and there is disagreement over what it should be called.
That said, as of 2019, there is a strong case to be made that kebab-case is winning:
https://trends.google.com/trends/explore?da...
Removing list of vms in vagrant cache
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You should use the following command to remove invalid entries from the global index:
vagrant global-status --prune
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iPhone: Setting Navigation Bar Title
Hey all. I'm still pretty new to iPhone development, and I'm having a bit of trouble figuring out how to change the title of my Navigation Bar. On another question on this site somebody recommended using :
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Android SharedPreference security
...as the creating app would be able to access them (this is not usually done and you need to take specific action to make two apps runs with the same UID, so this is probably not a big concern). Finally, if someone was able to mount your device's filesystem without using the installed Android OS, they...
How to get last items of a list in Python?
I need the last 9 numbers of a list and I'm sure there is a way to do it with slicing, but I can't seem to get it. I can get the first 9 like this:
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