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What's the recommended approach to resetting migration history using Django South?
...t a longer variant of manage.py convert_to_south my_app, but I prefer that extra control, in such delicate situation as modifying the production database.
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C# 5 async CTP: why is internal “state” set to 0 in generated code before EndAwait call?
...rrect, as -1 normally means "finished". I could argue that we're giving an extra meaning to state 0 at the moment, but ultimately it doesn't really matter. The point of this question was finding out why the state is being set at all.
The value is relevant if the await ends in an exception which is ...
How does the @property decorator work in Python?
...erty()
<property object at 0x10ff07940>
It is this object that has extra methods:
>>> property().getter
<built-in method getter of property object at 0x10ff07998>
>>> property().setter
<built-in method setter of property object at 0x10ff07940>
>>> prop...
What is two way binding?
... emberjs, to create two way binding is by creating a new property with the string Binding at the end, then specifying a path from the global scope:
App.wife = Ember.Object.create({
householdIncome: 80000
});
App.husband = Ember.Object.create({
householdIncomeBinding: 'App.wife.householdIncome'...
How can I create directories recursively? [duplicate]
...nal calls to the shell commands mkdir, chmod, and chown. Make sure to pass extra flags to recursively affect directories:
>>> import subprocess
>>> subprocess.check_output(['mkdir', '-p', 'first/second/third'])
# Equivalent to running 'mkdir -p first/second/third' in a shell (whi...
How do I use a custom deleter with a std::unique_ptr member?
...uplicator's approach, which has the same advantages (inlining deletion, no extra storage on each unique_ptr, no need to provide an instance of the deleter when constructing), and adds the benefit of being able to use std::unique_ptr<Bar> anywhere without needing to remember to use the special ...
Object of custom type as dictionary key
...have __hash__ by default that calls id(self), as you noted.
There is some extra tips from the documentation.:
Classes which inherit a __hash__()
method from a parent class but change
the meaning of __cmp__() or __eq__()
such that the hash value returned is
no longer appropriate (e.g. by...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
...essor, too. Therefore, most compilers will pad
the structure (as if with extra, invisible fields) like this:
+-------+-------+-------+-------+
| a | pad1 |
+-------+-------+-------+-------+
| b | pad2 |
+-------+-------+-------+-------+
| c ...
How to free memory in Java?
...emory you may want to consider.
For example, say you'd declared a List<String> at the beginning of a method which grew in size to be very large, but was only required until half-way through the method. You could at this point set the List reference to null to allow the garbage collector to p...
How to enter quotes in a Java string?
I want to initialize a String in Java, but that string needs to include quotes; for example: "ROM" . I tried doing:
10 Ans...