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Disable Required validation attribute under certain circumstances
I was wondering if it is possible to disable the Required validation attribute in certain controller actions. I am wondering this because on one of my edit forms I do not require the user to enter values for fields that they have already specified previously. However I then implement logic that when...
SQL Server, convert a named instance to default instance?
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Actually this is the response to this question but if you need change your instance name, please see Zasz answer. Please do not downvote because is not what you are looking for, check the question first.
– Leandro
Apr 4 '15 at 21:31
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Singleton by Jon Skeet clarification
...at the post about beforeinitfield and type initialization tell you is that if you have no static constructor, the runtime can initialize it at any time (but before you use it). If you do have a static constructor, your code in the static constructor might initialize the fields, which means that the ...
How to access environment variable values?
...mes you might need to see a complete list!
# using get will return `None` if a key is not present rather than raise a `KeyError`
print(os.environ.get('KEY_THAT_MIGHT_EXIST'))
# os.getenv is equivalent, and can also give a default value instead of `None`
print(os.getenv('KEY_THAT_MIGHT_EXIST', defa...
I do not want to inherit the child opacity from the parent in CSS
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@Madmartigan Yes, if you want the text in the parent div to have opacity, then you would have to set the opacity of the text with a span. You can use a polyfill to make it backwards compatible, or you can use a png.
– Dan...
Bash script to set up a temporary SSH tunnel
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If you use it in a script you need to wait for the control socket for a few seconds to become available. My solution: while [ ! -e $ctrl_socket ]; do sleep 0.1; done
– Adam Wallner
Feb 1...
Using ls to list directories and their total sizes
...dable *
Explanation:
du: Disk Usage
-s: Display a summary for each specified file. (Equivalent to -d 0)
-h: "Human-readable" output. Use unit suffixes: Byte, Kibibyte (KiB), Mebibyte (MiB), Gibibyte (GiB), Tebibyte (TiB) and Pebibyte (PiB). (BASE2)
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Make: how to continue after a command fails?
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For example,
clean:
-rm -f *.o
This causes rm to continue even if it is unable to remove a file.
All examples are with rm, but are applicable to any other command you need to ignore errors from (i.e. mkdir).
sh...
Twitter Bootstrap 3: how to use media queries?
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Bootstrap 3
Here are the selectors used in BS3, if you want to stay consistent:
@media(max-width:767px){}
@media(min-width:768px){}
@media(min-width:992px){}
@media(min-width:1200px){}
Note: FYI, this may be useful for debugging:
<span class="visible-xs">SIZE XS&...
Hibernate lazy-load application design
...ersistence is a myth, since application always should take care of entity lifecycle and of size of object graph being loaded.
Note that Hibernate can't read thoughts, therefore if you know that you need a particular set of dependencies for a particular operation, you need to express your intentions...