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Templated check for the existence of a class member function?
...to write a template that changes behavior depending on if a certain member function is defined on a class?
29 Answers
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Pointer expressions: *ptr++, *++ptr and ++*ptr
...hen increments dereferenced value
And here's a fourth, every bit as much fun as the other three:
(*ptr)++ // effectively forces a dereference, then increments dereferenced value
The first and second will crash if ptr is actually an array identifier. The third and fourth will crash if ptr points...
How Drupal works? [closed]
...can be confusing on this front, partially because it has a relatively deep function stack. Although it's procedural PHP it's purely event/listener driven in its architecture, and there's no simple "flow" in the main PHP script for you to look though. I recently did a presentation on this very subjec...
When to use volatile with multi threading?
...it into cache for this thread's stores, not doing any explicit flushing. (https://preshing.com/20120913/acquire-and-release-semantics/ and https://preshing.com/20120710/memory-barriers-are-like-source-control-operations/). (And an acquire-load means ordering access to cache in the other core).
A ...
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...
What is the difference between “text” and new String(“text”)?
...
123
String literals will go into String Constant Pool.
The below snapshot might help you to under...
Interface vs Base class
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123
Interfaces and base classes represent two different forms of relationships.
Inheritance (base...
What are the differences between Perl, Python, AWK and sed? [closed]
...unced "tim-toady"). Perl has 'objects', but it is more of an add-on than a fundamental part of the language.
Python was written last, and probably in part as a reaction to Perl. It has some interesting syntactic ideas (indenting to indicate levels - no braces or equivalents). It is more fundamental...
How should I use try-with-resources with JDBC?
... = new PreparedStatementWrapper(con, query,
new Object[] { 123L, "TEST" }) {
@Override
protected void prepareStatement(Object... params) throws SQLException {
stat.setLong(1, Long.class.cast(params[0]));
stat.setString(2, String...
Good ways to manage a changelog using git?
...perspective as a developer. And that's even ignoring stuff like "Merge PR #123 from xdev/foo" and "Opps, fixed newFeature so it actually works" type things that are likely to exist in any real-world repo.
– Ajedi32
Jan 11 '16 at 17:41
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