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dynamic_cast and static_cast in C++
...lass Derived2 : public Base {};
class ReDerived : public Derived {};
void test( Base & base )
{
dynamic_cast<Derived&>(base);
}
int main() {
Base b;
Derived d;
Derived2 d2;
ReDerived rd;
test( b ); // throw: b is not a Derived object
test( d ); // ok
test...
Best way to combine two or more byte arrays in C#
...econds
I increased the size of each array to 100 elements and re-ran the test:
New Byte Array using System.Array.Copy - 0.2812554 seconds
New Byte Array using System.Buffer.BlockCopy - 0.2500048 seconds
IEnumerable<byte> using C# yield operator - 0.0625012 seconds
IEnumerable<...
How to use JavaScript regex over multiple lines?
...: http://jsperf.com/javascript-multiline-regexp-workarounds
Using [^]: fastest
Using [\s\S]: 0.83% slower
Using (.|\r|\n): 96% slower
Using (.|[\r\n]): 96% slower
NB: You can also use [^] but it is deprecated in the below comment.
...
Selecting a row in DataGridView programmatically
...
Not tested, but I think you can do the following:
dataGrid.Rows[index].Selected = true;
or you could do the following (but again: not tested):
dataGrid.SelectedRows.Clear();
foreach(DataGridViewRow row in dataGrid.Rows)
{
...
Is there a difference between YES/NO,TRUE/FALSE and true/false in objective-c?
...hich is why you can evaluate any primitive type or expression as a boolean test (including, e.g. pointers). Note that you should do the former, not the latter.
Note that there is a difference if you assign obtuse values to a so-called BOOL variable and test for specific values, so always use them a...
HtmlSpecialChars equivalent in Javascript?
...pecial character. For example:
escapeHtml('Kip\'s <b>evil</b> "test" code\'s here');
Actual: Kip&#039;s &lt;b&gt;evil</b> &quot;test" code's here
Expected: Kip&#039;s &lt;b&gt;evil&lt;/b&gt; &quot;test&quot; code&#039;s here
Here i...
Pushing an existing Git repository to SVN
... as all data is in the repository itself. You can then set up a file-based testing repository, using:
svnadmin create /home/name/tmp/test-repo
And check a working copy out, using:
svn co file:///home/name/tmp/test-repo svn-working-copy
That'll allow you to play around with things before making...
What Android tools and methods work best to find memory/resource leaks? [closed]
...
Testing, lots of testing. Problem is that you can't even really tell how much memory your app is using, due to memory sharing and other optimization techniques. You can get memory readings using the usual shell commands, but ...
Is APC compatible with PHP 5.4 or PHP 5.5?
...would personally advise those who depend on APC for it's opcode caching to test their code with the upcoming built-in opcode cache, and feed back any issues encountered to ensure a stable final release.
I do not know what this means for the future of APC.
APC FOR PHP 5.4+ IS STILL FLAGGED AS BETA
Th...
How to check a string for specific characters?
...nformation on strings, including about using the in operator for substring tests.
Update: This does the same job as my above suggestion with less repetition:
# When looking for single characters, this checks for any of the characters...
# ...since strings are collections of characters
any(i in '&l...