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When does invoking a member function on a null instance result in undefined behavior?
...ult in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute.
The first thing to understand is why it's undefined behavior to dereference a null pointer. In C++03...
git diff file against its last change
... You can reference previous commits as HEAD^ (in your example this will be 123abc) or HEAD^^ (456def in your example), etc ...
So the answer to your question is:
git diff HEAD^^ myfile
share
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im...
Load and execute external js file in node.js with access to local variables?
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David WoleverDavid Wolever
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Associativity of “in” in Python?
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123
1 in [] in 'a' is evaluated as (1 in []) and ([] in 'a').
Since the first condition (1 in []...
How can I profile C++ code running on Linux?
...ot precision of measure. So for example, there can be, mid-stack, a single function call A(); that accounts for 50% of time, but it can be in another large function B, along with many other calls to A() that are not costly. Precise summaries of function times can be a clue, but every other stack sam...
How to make jQuery to not round value returned by .width()?
...: stackoverflow.com/questions/11907514/…
– flyingL123
Jun 5 '15 at 21:51
Nice! same question for outerWidth(true)? ...
How to create a multi-tenant database with shared table structures?
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AdaTheDevAdaTheDev
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fatal: Not a valid object name: 'master'
...newly created (i.e. the primary branch would be something like feature/FOO-123). Those repos would literally not have a master branch at all.
– Thor84no
Aug 14 at 13:56
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Calculate difference in keys contained in two Python dictionaries
... edited May 8 '13 at 14:35
Oz123
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answered Jul 22 '09 at 13:53
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What is the difference between “text” and new String(“text”)?
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String literals will go into String Constant Pool.
The below snapshot might help you to under...