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What is the use of the ArraySegment class?
...s Program
{
static void Main()
{
// Create an ArraySegment from this array.
int[] array = { 10, 20, 30 };
ArraySegment<int> segment = new ArraySegment<int>(array, 1, 2);
// Write the array.
Console.WriteLine("-- Array --");
int[] o...
Git ignore file for Xcode projects
...bout this, but in practice it seems you should ignore it.
# - minor tweaks from Jona and Coeur (slightly more precise xc* filtering/names)
# 2014 updates:
# - appended non-standard items DISABLED by default (uncomment if you use those tools)
# - removed the edit that an SO.com moderator made without...
Why use pointers? [closed]
...either easy-enough. References are no silver bullet protecting an engineer from shooting himself in the foot. See it live.
– WhozCraig
Sep 9 '13 at 18:14
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Convert MySQL to SQlite [closed]
Is it possible to convert from MySQL to SQLite with a free tool on windows?
15 Answers
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SQLAlchemy: What's the difference between flush() and commit()?
...a Session object to query the database, the query will return results both from the database and from the flushed parts of the uncommitted transaction it holds. By default, Session objects autoflush their operations, but this can be disabled.
Hopefully this example will make this clearer:
#---
s =...
Why doesn't django's model.save() call full_clean()?
...
The most helpful excerpt (IMHO) from the second reference: "Developing an "automatic" validation option which is both simple enough to actually be useful and robust enough to handle all the edge cases is -- if it's even possible -- far more than can be acco...
Installing Python 3 on RHEL
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Installing from RPM is generally better, because:
you can install and uninstall (properly) python3.
the installation time is way faster. If you work in a cloud environment with multiple VMs, compiling python3 on each VMs is not accept...
Java inner class and static nested class
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From the Java Tutorial:
Nested classes are divided into two categories: static and non-static. Nested classes that are declared static are simply called static nested classes. Non-static nested classes are called inner cl...
What does immutable mean?
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hello from 2015!! "On a lower level, immutability means that the memory the string is stored in will not be modified. " --- this is too restrictive and does not sound right. Immutability is only about userland, the virtual memory m...
How do I create a namespace package in Python?
...s and regular packages have __file__ set to the .py file they were created from. Regular and namespace packages have __path__set to the directory or directories they were created from.
When you do import foo.bar, the above search happens first for foo, then if a package was found, the search for ba...