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CASCADE DELETE just once
...t-- if it does, it recursively calls itsself on the found data. It uses an array of data already marked for deletion to prevent infinite loops. Please test it out and let me know how it works for you. Note: It's a little slow.
I call it like so:
select delete_cascade('public','my_table','1');
creat...
Can I try/catch a warning?
...line);
}
function warning_handler($errno, $errstr, $errfile, $errline, array $errcontext) {
return false && throwErrorException($errstr, 0, $errno, $errfile, $errline);
# error_log("AAA"); # will never run after throw
/* Do execute PHP internal error handler */
# return f...
How to build a query string for a URL in C#?
...cialized;
private string ToQueryString(NameValueCollection nvc)
{
var array = (
from key in nvc.AllKeys
from value in nvc.GetValues(key)
select string.Format(
"{0}={1}",
HttpUtility.UrlEncode(key),
HttpUtility.UrlEncode...
Has an event handler already been added?
...ng to see if a specific handler (function) has been added then you can use array.
public class MyClass
{
event Action MyEvent;
}
...
MyClass myClass = new MyClass();
myClass.MyEvent += SomeFunction;
...
Action[] handlers = myClass.MyEvent.GetInvocationList(); //this will be an array of 1 in t...
How do you make a deep copy of an object?
...
Be aware that the FastByteArrayOutputStream implementation provided in the article could be more efficient. It uses an ArrayList-style expansion when the buffer fills up, but it's better to use a LinkedList-style expansion approach. Instead of creatin...
Has anyone actually implemented a Fibonacci-Heap efficiently?
...a few years back, but it was several orders of magnitude slower than using array-based BinHeaps.
4 Answers
...
When should we use intern method of String on String literals
... hasReferenceVal public, without going into much detail that it expects an array of interned strings.
V2.0
public class MyClass
{
private String reference_val;
...
public boolean hasReferenceVal ( final String[] strings )
{
for ( String s : strings )
{
if ( s == reference_va...
How to let PHP to create subdomain automatically for each user?
...plode('.', $_SERVER['HTTP_HOST']);
/*
We get following array
Array
(
[0] => qwerty
[1] => example
[2] => org
)
*/
// Step 4.
// If second piece of array exists, r...
Passing variables in remote ssh command
...ead that from the remote location.
In the following example,
an indexed array is filled (for convenience) with the names of the variables whose values you want to retrieve on the remote side.
For each of those variables, we give to ssh a null-terminated line giving the name and value of the varia...
How to copy a file to a remote server in Python using SCP or SSH?
...ng subprocess.Popen is the Right Thing. Passing it a string rather than an array (and using shell=True) is the Wrong Thing, as it means filenames with spaces don't work correctly.
– Charles Duffy
Oct 15 '08 at 12:07
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