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What are the differences between the different saving methods in Hibernate?
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Here's my understanding of the methods. Mainly these are based on the API though as I don't use all of these in practice.
saveOrUpdate
Calls either save or update depending on some checks. E.g. if no identifier exists, save is called. Otherwise update is called.
save
Persists an entity. Wi...
How to have an automatic timestamp in SQLite?
... overrided OnModelCreating, inside your context class, and add this Fluent API code:
modelBuilder.Entity<YourEntity>()
.Property(b => b.Timestamp)
.ValueGeneratedOnAddOrUpdate()
.IsConcurrencyToken()
.ForSqliteHasDefaultValue...
No secret option provided to Rack::Session::Cookie warning?
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This is a Rails bug, as the subclass is violating the superclass API contract.
The warning can be safely ignored by Rails users.
(https://github.com/rack/rack/issues/485#issuecomment-11956708, emphasis added)
Confirmation on the rails bug discussion: https://github.com/rails/rails/...
What are some good Python ORM solutions? [closed]
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Storm has arguably the simplest API:
from storm.locals import *
class Foo:
__storm_table__ = 'foos'
id = Int(primary=True)
class Thing:
__storm_table__ = 'things'
id = Int(primary=True)
name = Unicode()
description = Unicode()
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How do you make a deep copy of an object?
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You can use a library that has a simple API, and performs relatively fast cloning with reflection (should be faster than serialization methods).
Cloner cloner = new Cloner();
MyClass clone = cloner.deepClone(o);
// clone is a deep-clone of o
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Get keys from HashMap in Java
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Check this.
https://docs.oracle.com/javase/8/docs/api/java/util/HashMap.html
(Use java.util.Objects.equals because HashMap can contain null)
Using JDK8+
/**
* Find any key matching a value.
*
* @param value The value to be matched. Can be null.
* @return Any key matc...
Twitter bootstrap modal-backdrop doesn't disappear
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The should be the accepted answer - it uses the bootstrap API as intended and doesn't hack the body with .modal-open
– Aaron Hudon
Aug 4 '17 at 23:37
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ASP.NET: HTTP Error 500.19 – Internal Server Error 0x8007000d
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In my case (.Net Core Web API) for this issue HTTP Error 500.19 – Internal Server Error 0x8007000d
First download dotnet-hosting-3.0.0-preview5-19227-01-win (.Net Core 3) or dotnetcore 2 hasting windows
https://download.visualstudio.microsoft.com/...
gulp globbing- how to watch everything below directory
...n be a direct file path." (source: github.com/gulpjs/gulp/blob/master/docs/API.md ) "[node-glob] uses the minimatch library to do its matching."( source: github.com/isaacs/node-glob )
– Daniel Dropik
Jul 22 '15 at 3:09
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What is the difference between exit(0) and exit(1) in C?
...s management in Unix ...
know about sigaction, watipid()..for()...such....API...........
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