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Why do I need Transaction in Hibernate for read-only operations?
...ght be problematic. For instance Hibernate community says that working outside of transaction might cause unpredictable behavior. This is because Hibernate will open transaction, but it won't close it on its own, thus connection will be returned to the Connection Pool with transaction being not comm...
C# constructor execution order
...f this should be a comment/answer but for those who learn by example this fiddle illustrates the order as well: https://dotnetfiddle.net/kETPKP
using System;
// order is approximately
/*
1) most derived initializers first.
2) most base constructors first (or top-level in constructor-stack fi...
Simple logical operators in Bash
...t works (it would work if all the variables were numbers), but it's not an idiomatic way at all.
(…) parentheses indicate a subshell. What's inside them isn't an expression like in many other languages. It's a list of commands (just like outside parentheses). These commands are executed in a sep...
HTTP status code for a partial successful request
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I understand. I'm just trying to avoid an extra level of status handling (which is not nice IMHO). Most of my code works with HTTP ones. And I think my described use case will do fine without.
– Norbert Hartl
Dec 12 '11 at...
What is the maximum possible length of a query string?
...o the length of a query string (section 3.2.1). RFC 3986 (Uniform Resource Identifier — URI) also states there is no limit, but indicates the hostname is limited to 255 characters because of DNS limitations (section 2.3.3).
While the specifications do not specify any maximum length, practical lim...
What are the differences between .so and .dylib on osx?
...inkModule) were introduced with 10.1 to load and unload bundles, but they didn't work for dylibs. A dlopen compatibility library that worked with bundles was added in 10.3; in 10.4, dlopen was rewritten to be a native part of dyld and added support for loading (but not unloading) dylibs. Finally, 1...
Use of the MANIFEST.MF file in Java
... to the application is. An entry point is any class with a public static void main(String[] args) method. This information is provided in the Main-Class header, which has the general form:
Main-Class: classname
The value classname is to be replaced with the application's entry point.
Download Ex...
python requests file upload
...g the requests.post, the records are still there indicating that the file did not close.
– Demetris
Oct 11 '19 at 7:06
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Get position of UIView in respect to its superview's superview
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Frame: (X,Y,width,height).
Hence width and height wont change even wrt the super-super view. You can easily get the X, Y as following.
X = button.frame.origin.x + [button superview].frame.origin.x;
Y = button.frame.origin.y + [button s...
Django Admin - Disable the 'Add' action for a specific model
...ms. I have many custom forms and formsets and inlineformsets and custom validation and custom querysets. Hence the add model action depends on forms that need other things, and the 'add model' in the django admin throughs a 500 from a custom queryset.
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