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AttributeError: 'module' object has no attribute
...ave mutual top-level imports, which is almost always a bad idea.
If you really must have mutual imports in Python, the way to do it is to import them within a function:
# In b.py:
def cause_a_to_do_something():
import a
a.do_something()
Now a.py can safely do import b without causing pro...
What is the best way to use a HashMap in C++?
...Map API, but I cannot find any good and thorough documentation with good examples regarding this.
5 Answers
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Multiple “order by” in LINQ
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How on earth have I gone all this time without knowing about ThenBy?! (Edit: looks like it was introduced in .NET 4.0, which explains how it slipped past me unnoticed.)
– Jordan Gray
Nov 21 '13 at 15:05
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Android: allow portrait and landscape for tablets, but force portrait on phone?
... size of the device
if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {
Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();
}
else if ((getResources().getConfiguration().screenLayout &...
$(this).serialize() — How to add a value?
...
Instead of
data: $(this).serialize() + '&=NonFormValue' + NonFormValue,
you probably want
data: $(this).serialize() + '&NonFormValue=' + NonFormValue,
You should be careful to URL-encode the value of NonFormValue if it might contain any special charact...
Ruby Hash to array of values
...
Or hash.map(&:second) :)
– Jaap Haagmans
Mar 18 '15 at 7:19
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How to fast-forward a branch to head?
...anch moving local changes on top of the latest remote state:
$ git fetch && git rebase
More generally, to fast-forward and drop the local changes (hard reset)*:
$ git fetch && git checkout ${the_branch_name} && git reset --hard origin/${the_branch_name}
to fast-forward ...
Extract traceback info from an exception object
...ion("foo occurred").with_traceback(tracebackobj)
These features are minimally described as part of the raise documentation.
All credit for this part of the answer should go to Vyctor, who first posted this information. I'm including it here only because this answer is stuck at the top, and Python...
How to find the JVM version from a program?
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That JMX call returns the equivalent of "java.vm.version", not "java.version". These are usually (but not necessarily) the same.
– Alex Miller
Jun 21 '13 at 15:54
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How do I return multiple values from a function in C?
... *a = 1;
*b = getString();
}
void foo() {
int a, b;
getPair(&a, &b);
}
Which one you choose to use depends largely on personal preference as to whatever semantics you like more.
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