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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
...itation on how you choose to use/reuse an existing exception.
It's your application- as long as you document it and clearly indicate the exception that will be thrown in the specific case of a missing configuration value, you can use any exception you like. If you do want a very specific indicat...
Adding a directory to the PATH environment variable in Windows
...d window you have open:
set PATH=%PATH%;C:\your\path\here\
This command appends C:\your\path\here\ to the current PATH.
Breaking it down:
set – A command that changes cmd's environment variables only for the current cmd session; other programs and the system are unaffected.
PATH= – Signifi...
Map.clear() vs new Map : Which one will be better? [duplicate]
...
Complicated question. Let's see what happens.
You instantiate a new instance, which is backed with new array. So, garbage collector should clear all the key and values from the previous map, and clear the reference to itself. So O(n) algorithm is executed anyway...
How to make a .jar out from an Android Studio project
...will include dependent libraries in archive.
mainClassName = "com.company.application.Main"
jar {
manifest {
attributes "Main-Class": "$mainClassName"
}
from {
configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}
}
This will result in [module_name]/build/l...
When to use an assertion and when to use an exception
...e an exception to check for a condition in my code, I wonder when it is an appropriate time to use an assertion?
11 Answers...
Does Spring @Transactional attribute work on a private method?
... Method visibility and @Transactional
When using proxies, you should apply
the @Transactional annotation only
to methods with public visibility. If
you do annotate protected, private or
package-visible methods with the
@Transactional annotation, no error
is raised, but the annotate...
Add timestamps to an existing table
... @Michael: I've been using MongoDB exclusively with the 3.1 app I'm working on so I haven't worked with 3.1 AR migrations. The docs indicate that everything is moving towards instance methods (for unknown reasons).
– mu is too short
Sep 25 '11 at...
How can I measure the similarity between two images? [closed]
I would like to compare a screenshot of one application (could be a Web page) with a previously taken screenshot to determine whether the application is displaying itself correctly. I don't want an exact match comparison, because the aspect could be slightly different (in the case of a Web app, depe...
Java NIO FileChannel versus FileOutputstream performance / usefulness
...is buffer size is ripe for tuning. I've settled on 4KB for one part of my application, 256KB for another. I suspect your code is suffering with such a large buffer. Run some benchmarks with buffers of 1KB, 2KB, 4KB, 8KB, 16KB, 32KB and 64KB to prove it to yourself.
Don't perform java benchmarks ...
Are GUID collisions possible?
...a database in SQL Server 2000 that uses a GUID for each user that uses the app it's tied to. Somehow, two users ended up with the same GUID. I know that microsoft uses an algorithm to generate a random GUID that has an extremely low chance of causing collisons, but is a collision still possible?
...