大约有 30,000 项符合查询结果（耗时：0.0769秒） [XML]
Static variables in member functions
...side the program.
Any instance of A object will affect the same i and lifetime of i will remain through out the program. To add an example:
A o1, o2, o3;
o1.foo(); // i = 1
o2.foo(); // i = 2
o3.foo(); // i = 3
o1.foo(); // i = 4
...
What is `related_name` used for in Django?
...= models.ForeignKey(Material, related_name = 'frommaterial')
creation_time = models.DateTimeField(auto_now_add=True, blank=True)
quantity = models.DecimalField(max_digits=19, decimal_places=10)
So when you will have to access this data
you only can use related name
bom = material.toma...
How to find if a native DLL file is compiled as x64 or x86?
... 8664 machine (x64)
6 number of sections
4BBAB813 time date stamp Tue Apr 06 12:26:59 2010
0 file pointer to symbol table
0 number of symbols
F0 size of optional header
2022 characteristics
Executable...
What are some popular naming conventions for Unit Tests? [closed]
... never heard the term PascalCase used, and I've been doing this for a long time. I only see the term PascalCase come up in Microsoft developer circles, is that what you do?
– Frank Szczerba
Jun 19 '09 at 19:02
...
How to upgrade all Python packages with pip?
Is it possible to upgrade all Python packages at one time with pip ?
55 Answers
55
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Design patterns or best practices for shell scripts [closed]
...n. Be careful though, because if you do this, the program will abort every time you evaluate an undefined variable. For this reason, the only way to check if a variable is not defined is the following:
if test "x${foo:-notset}" == "xnotset"
then
echo "foo not set"
fi
You can declare variables...
What is a semaphore?
...mer.
...
Here an important point is made that mutexes interfere with real time operating systems in a bad way, causing priority inversion where a less important task may be executed before a more important task because of resource sharing. In short, this happens when a lower priority task uses a m...
SQL to determine minimum sequential days of access?
...is value is then re-added to the zero date yielding the same date with the time truncated.
– IDisposable
Jul 24 '09 at 8:21
1
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How to easily map c++ enums to strings
...gs from a text file and generate a .h file with the static char at compile time. ="Write programs to write programs"
– Martin Beckett
Mar 5 '09 at 15:39
...
What's the difference between the Dependency Injection and Service Locator patterns?
... But how do you handle the case where you have to create objects during runtime? If you create them manually with "new" you cannot make use of DI. If you call the DI framework for help, you're breaking the pattern. So what options are left?
– Boris
Apr 10 '13 a...