大约有 16,380 项符合查询结果(耗时:0.0211秒) [XML]
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
After this comment to one of my question, I'm thinking if it is better using one database with X schemas or vice versa.
5...
Canary release strategy vs. Blue/Green
My understanding of a canary release is that it's a partial release to a subset of production nodes with sticky sessions turned on. That way you can control and minimize the number of users/customers that get impacted if you end up releasing a bad bug.
...
How to find the JVM version from a program?
I want to write a sample Java file in which I want to know the JVM version in which the class is running. Is there a way?
1...
How do you write a migration to rename an ActiveRecord model and its table in Rails?
I'm terrible at naming and realize that there are a better set of names for my models in my Rails app. Is there any way to use a migration to rename a model and its corresponding table?
...
Java heap terminology: young, old and permanent generations?
I'm trying to understand What the concepts of young , old and permanent generations are in the Java heap terminology, and more specifically the interactions between the three generations.
...
How to install pip with Python 3?
...
edit: Manual installation and use of setuptools is not the standard process anymore.
If you're running Python 2.7.9+ or Python 3.4+
Congrats, you should already have pip installed. If you do not, read onward.
If you're running a Un...
Django get the static files URL in view
I'm using reportlab pdfgen to create a PDF. In the PDF there is an image created by drawImage . For this I either need the URL to an image or the path to an image in the view. I managed to build the URL but how would I get the local path to the image?
...
Are class names in CSS selectors case sensitive?
...e generally case-insensitive; this includes class and ID selectors.
But HTML class names are case-sensitive (see the attribute definition), and that's causing a mismatch in your second example. This has not changed in HTML5.1
This is because the case-sensitivity of selectors is dependent on what t...
Bash variable scope
Please explain to me why the very last echo statement is blank? I expect that XCODE is incremented in the while loop to a value of 1:
...
How to run test cases in a specified file?
My package test cases are scattered across multiple files, if I run go test <package_name> it runs all test cases in the package.
...
