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Spring @Transactional - isolation, propagation
... | Propagation | Description |
+-------+---------------------------+------------------------------------------------------------------------------------------------------+
| -1 | TIMEOUT_DEFAULT...
What is a patch in git version control?
...s is line A.
+This is SPARTA.
This is line B, or otherwise #2.
Having a description of changes, you can apply it to a initial content and get a modified content. And those changes, put in unified format that "patch"-like programs can understand, is called a patch file. It's like instead of gettin...
Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...into it. Even then, it is often good to unwrap the optional and use a more descriptive assert if it is nil.
When Not To Use An Implicitly Unwrapped Optional
1. Lazily Calculated Member Variables
Sometimes you have a member variable that should never be nil, but it cannot be set to the correct val...
What are the rules for evaluation order in Java?
...age. This is Java, where the Java Language Specification is the definitive description of the semantics. In particular, §15.26.1 is relevant because that describes the evaluation order for the = operator (we all know that it is right-associative, yes?). Cutting it down a little to the bits that we...
What does it mean to hydrate an object?
...ollowing terms. Hopefully, this will disambiguate.
Hydrate
When you see descriptions that say things like, "an object that is waiting for data, is waiting to be hydrated", that's confusing and misleading. Objects don't wait for things, and hydration is just the act of filling an object with data....
What are the main uses of yield(), and how does it differ from join() and interrupt()?
...
First, the actual description is
Causes the currently executing thread object to temporarily pause and
allow other threads to execute.
Now, it is very likely that your main thread will execute the loop five times before the run method ...
What algorithm gives suggestions in a spell checker?
...you can skip straight to ranking.
Update: I've since found one algorithm description that's similar to this, the FAROO Distributed Search. This is still an edit-distance limited search, but it's very fast because the pre-calculation step works like my "bad hash functions" idea. FAROO just uses a...
How can I repeat a character in Bash?
...racter-only solution
P ... a POSIX-compliant solution
followed by a brief description of the solution
suffixed with the name of the author of the originating answer
Small repeat count: 100
[M, P] printf %.s= [dogbane]: 0.0002
[M ] printf + bash global substr. repl...
Install dependencies globally and locally using package.json
...ls this script prior to install:
{
"name" : "Books",
"description" : "Node (npm) configuration for Books Database Web Application Tools",
"version" : "2.1.1",
"private" : true,
"scripts":
{
"preinstall" : "node ../../Sha...
rsync: difference between --size-only and --ignore-times
...ys rsync compares files -- the authoritative source is the rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good.
For local files, rsync compares metadata and if it looks like it doesn't need to c...