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When should I use a struct rather than a class in C#?
...llection);
And ...
4. Both structs store TKey and TValue, which we all know are quite capable of being reference types (added bonus info)
Hashed keys notwithstanding, dictionaries are fast in part because instancing a struct is quicker than a reference type. Here, I have a Dictionary<int, int...
How to deploy correctly when using Composer's develop / production switch?
...on why Composer will use the --dev flag by default (on install and update) nowadays. Composer is mostly run in scenario's where this is desired behavior:
The basic Composer workflow is as follows:
A new project is started: composer.phar install --dev, json and lock files are commited to VCS.
Othe...
How to save as a new file and keep working on the original one in Vim?
...
Thanks for the answers. Now I know that there are two ways of "SAVE AS" in Vim.
Assumed that I'm editing hello.txt.
:w world.txt will write hello.txt's content to the file world.txt while keeping hello.txt as the opened buffer in vim.
:sav world...
How to generate gcc debug symbol outside the build target?
I know I can generate debug symbol using -g option. However the symbol is embeded in the target file. Could gcc generate debug symbol outside the result executable/library? Like .pdb file of windows VC++ compiler did.
...
How to make all Objects in AWS S3 bucket public by default?
...incipal": {
"AWS": [
"*"
]
}
}
]
}
Now go to your AWS S3 console, At the bucket level, click on Properties, Expand Permissions, then Select Add bucket policy. Paste the above generated code into the editor and hit save.
All your items in the bucket will be pu...
Understanding checked vs unchecked exceptions in Java
...tException is unchecked (= is subclass of RuntimeException). Why? I don't know. (but there should have been a method isValidInteger(..))
Is RuntimeException an unchecked exception?
Yes, exactly.
What should I do here?
It depends on where this code is and what you want to happen. If it is in the UI l...
How to remove a file from version control without deleting it?
...it. But at that point, when they have already overwritten the settings and now get an svn "rm" on update, it actually removes the potentially-vital local settings file from their system, while it should just be unversioned so it can be configured to local settings again.
– Nyer...
Changes in import statement python3
...ollowing tree for example:
mypkg
├── base.py
└── derived.py
Now, your derived.py requires something from base.py. In Python 2, you could do it like this (in derived.py):
from base import BaseThing
Python 3 no longer supports that since it's not explicit whether you want the 'relati...
Can we have multiple in same ?
...ntal "yes, multiple tbody elements are fine) remains. Specifically, you're now allowed to put the one tfoot element after the tbody if you like. (They neatly side-stepped the DTD aspect by saying they don't provide one.) :-)
– T.J. Crowder
Jul 11 '13 at 17:51
...
If REST applications are supposed to be stateless, how do you manage sessions?
...u’re actually making a request. The rest of the time, it doesn’t even know you exist. This means that whenever a client makes a request, it must include all the application states the server will need to process it.
Resource state is the same for every client, and its proper place is on the se...