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Difference between rake db:migrate db:reset and db:schema:load
...drop, db:setup
db:migrate:reset does db:drop, db:create, db:migrate
Typically, you would use db:migrate after having made changes to the schema via new migration files (this makes sense only if there is already data in the database). db:schema:load is used when you setup a new instance of your app...
jQuery checkbox checked state changed event
...in benefit of binding to the change event over the click event is that not all clicks on a checkbox will cause it to change state. If you only want to capture events that cause the checkbox to change state, you want the aptly-named change event. Redacted in comments
Also note that I've used this.ch...
What does the “expand” option do in grunt-contrib-copy? The examples all use it but the docs say not
...n API:
Set expand to true to enable the following options:
cwd All src matches are relative to (but don't include) this path.
src Pattern(s) to match, relative to the cwd.
dest Destination path prefix.
ext Replace any existing extension with this value in generated dest paths.
ex...
Unable to load DLL (Module could not be found HRESULT: 0x8007007E)
...found some dependency's missing (Oracle and some dll from IE). Need to install Oracle since my dll depends on that..then i will know :) Found the problem with DependencyWalker ;)
– Ingimar Andresson
Jan 25 '12 at 13:48
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Bulk insert with SQLAlchemy ORM
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You also need s.commit() to actually save the records (it took me a bit to figure this one out).
– horcle_buzz
Dec 4 '15 at 1:30
3
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One DbContext per web request… why?
...the DbContext caches data, it gets stale pretty soon. This will get you in all sorts of trouble when multiple users/applications work on that database simultaneously (which is very common of course). But I expect you already know that and just want to know why not to just inject a new instance (i.e....
Forward declaring an enum in C++
...can't know the storage required for the enum variable. C++ Compiler's are allowed to specify the actual storage space based on the size necessary to contain all the values specified. If all that is visible is the forward declaration, the translation unit can't know what storage size will have been...
Arrow operator (->) usage in C
I am reading a book called "Teach Yourself C in 21 Days" (I have already learned Java and C# so I am moving at a much faster pace). I was reading the chapter on pointers and the -> (arrow) operator came up without explanation. I think that it is used to call members and functions (like the eq...
Warning: Found conflicts between different versions of the same dependent assembly
...o projects require different versions. You have a few options:
Recompile all projects to use the same versions (e.g. move all to .Net 3.5). This is the preferred option because all code is running with the versions of dependencies they were compiled with.
Add a binding redirect. This will suppress...
Lint: How to ignore “ is not translated in ” errors?
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Thank you so much, literally saved me days of finding all the correct strings for production.
– D-Kent
Nov 13 '14 at 21:56
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