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Why do we not have a virtual constructor in C++?
...time-specified amounts of memory on the stack - e.g. GCC's variable-length array extension, alloca() - but leads to significant inefficiencies and complexities (e.g. here and here respectively)
for dynamic allocation it must return a pointer so memory can be deleted later.
the postulated notation ...
Regular expression for letters, numbers and - _
...
Here's a snippet to show how you can use this pattern:
<?php
$arr = array(
'screen123.css',
'screen-new-file.css',
'screen_new.js',
'screen new file.css'
);
foreach ($arr as $s) {
if (preg_match('/^[\w.-]*$/', $s)) {
print "$s is a match\n";
} else {
print "$s is NO match...
How to reuse an ostringstream?
... the deprecated std::strstream, which was able to write directly to a char array you allocated on the stack. You had to insert a terminating null manually. However, std::ends is not deprecated, i think because it's still useful as in the above cases.
...
UTF-8 all the way through
...=mysql.example.com;dbname=example_db',
"username",
"password",
array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
The site I took this from is down, but I was able to get it using the Google cache, luckily.
...
Getting a File's MD5 Checksum in Java
...st();
}
// see this How-to for a faster way to convert
// a byte array to a HEX string
public static String getMD5Checksum(String filename) throws Exception {
byte[] b = createChecksum(filename);
String result = "";
for (int i=0; i < b.length; i++) {
...
Does Swift have documentation generation support?
... 1. Item 1
/// 2. Item 2
/// 3. Item 3
Code blocks:
/// for item in array {
/// print(item)
/// }
An indentation of at least four spaces is required.
Inline Elements
Emphasis (italics):
/// Add like *this*, or like _this_.
Strong (bold):
/// You can **really** make text _...
Declaring pointers; asterisk on the left or right of the space between the type and name? [duplicate
...f pointer] and somePtr remains to be the name. We do something similar for arrays when we go to place the square brackets on the type side as well (i.e. byte[]). But to be honest, if you were to ask me how I write my pointers, I'd say I currently still prefer to write them as someType *somePtr :) To...
PHP: How to handle
...n get back the XML you put in. When you squeeze a SimpleXML object into an array, it throws away a lot of information - CDATA nodes, comments, any element not in the current namespace (e.g. <someNSPrefix:someElement />), the position of the child element in the text, etc. LIBXML_NOCDATA conver...
How to check for file lock? [duplicate]
... if (res == ERROR_MORE_DATA)
{
// Create an array to store the process results
RM_PROCESS_INFO[] processInfo = new RM_PROCESS_INFO[pnProcInfoNeeded];
pnProcInfo = pnProcInfoNeeded;
// Get the list
res = R...
How do you test that a Python function throws an exception?
...xception) 2. In my case, using 2.7.10, context.exception appears to be an array of characters. Using str doesn't work. I ended up doing this: ''.join(context.exception) So, put together: self.assertIn('This is broken', ''.join(context.exception))
– blockcipher
...