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When to use virtual destructors?
... methods
};
class Derived : public Base
{
~Derived()
{
// Do some important cleanup
}
};
Here, you'll notice that I didn't declare Base's destructor to be virtual. Now, let's have a look at the following snippet:
Base *b = new Derived();
// use b
delete b; // Here's the probl...
Set a default parameter value for a JavaScript function
... value isn't defined (and ignored if the value is passed). In Ruby you can do it like this:
27 Answers
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git difftool, open all diff files immediately, not in serial
... I for one greatly appreciate your script. Frankly, I can't fathom why Git doesn't behave the right way in this regard (Mercurial does, and has done so for years), nor can I fathom the lack of interest from the Git community.
– Douglas
Dec 19 '11 at 23:29
...
IntelliJ IDEA jump from interface to implementing class in Java
...ortcut is listed there.
In PC, it is CTRL + ALT + B: JetBrains navigation documentation.
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PHP multidimensional array search by value
...iner.
$key = array_search('100', array_column($userdb, 'uid'));
Here is documentation: http://php.net/manual/en/function.array-column.php.
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What's the point of const pointers?
...n-time, by getting the compiler to enforce what you mean.
Even though it doesn't change the functionality, adding const generates a compiler error when you're doing things you didn't mean to do. Imagine the following typo:
void foo(int* ptr)
{
ptr = 0;// oops, I meant *ptr = 0
}
If you use ...
UITableView, Separator color where to set?
... the "delegate" and "datasource" and all is working well. What I wanted to do next was change the separator color, but the only way I could find to do this was to add the method to one of the delegate callbacks, is there a better place I should put this?
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Where am I wrong about my project and these Javascript Frameworks?
...et of features available from the get-go with plenty of feature additions down the road.
7 Answers
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psycopg2: insert multiple rows with one query
...firmed this improvement myself. From what I've read psycopg2's executemany doesn't do anything optimal, just loops and does many execute statements. Using this method, a 700 row insert to a remote server went from 60s to <2s.
– Nelson
Apr 27 '15 at 23:22
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JavaScript module pattern with example [closed]
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This doesn't address the OP's question. It is a description of the module pattern not an example of how multiple modules can work together as the OP wanted.
– Erik Trautman
Sep 1 '15 at 23:3...