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Canary release strategy vs. Blue/Green
...r not the new 'green' version is exposed to real users. If it is, then I'd call it Canary. A common way to implement Canary is regular Blue/Green with the addition of smart routing of specific users to the new version. Read the post for a detailed comparison
Blue/Green:
Canary:
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What is the maximum length of a table name in Oracle?
... VARCHAR2(1)
COLUMN_ID NUMBER
DEFAULT_LENGTH NUMBER
DATA_DEFAULT LONG ...
How do I detect whether a Python variable is a function?
...
If this is for Python 2.x or for Python 3.2+, you can also use callable(). It used to be deprecated, but is now undeprecated, so you can use it again. You can read the discussion here: http://bugs.python.org/issue10518. You can do this with:
callable(obj)
If this is for Python 3.x but...
List files in local git repo?
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This Git command makes a much cleaner output and is ideal if you just want the list of files tracked by Git.
– mico
Feb 27 '16 at 12:00
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ByteArray 扩展 - 字节数组处理工具 · App Inventor 2 中文网
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when Button1.Click
do
// 创建字节数组并添加数据
call ByteArray1.Clear
call ByteArray1.AddByte 65 // 添加字符 'A'
call ByteArray1.AddByte 66 // 添加字符 'B'
call ByteArray1.AddByte 67 // 添加字符 'C'
// 获取数组长度
set Label1...
ViewDidAppear is not called when opening app from background
...ge because viewDidLoad , viewDidAppear and viewWillAppear nothing get called. How can I call when I open my app. Do I have to do anything from applicationDidBecomeActive ?
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Calling C++ class methods via a function pointer
How do I obtain a function pointer for a class member function, and later call that member function with a specific object? I’d like to write:
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Java heap terminology: young, old and permanent generations?
... permanent generations are in the Java heap terminology, and more specifically the interactions between the three generations.
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Multiple select statements in Single query
...ve tables. An alternate method may be as follows:
SELECT COUNT(user_table.id) AS TableCount,'user_table' AS TableSource FROM user_table
UNION SELECT COUNT(cat_table.id) AS TableCount,'cat_table' AS TableSource FROM cat_table
UNION SELECT COUNT(course_table.id) AS TableCount, 'course_table' AS Table...
What does “@private” mean in Objective-C?
... to clarify, methods are always public in Objective-C. There are ways of "hiding" method declarations, though—see this question for more information.
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