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HTTP authentication logout via PHP
...
Mu. No correct way exists, not even one that's consistent across browsers.
This is a problem that comes from the HTTP specification (section 15.6):
Existing HTTP clients and user agents typically retain authentication
information indefinitely. HTTP/1.1...
How do I test if a variable is a number in Bash?
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One approach is to use a regular expression, like so:
re='^[0-9]+$'
if ! [[ $yournumber =~ $re ]] ; then
echo "error: Not a number" >&2; exit 1
fi
If the value is not necessarily an integer, consider amending the...
iPhone: Detecting user inactivity/idle time since last screen touch
...t exception 'NSInternalInconsistencyException', reason: 'There can only be one UIApplication instance.'".. is anything else i need to do...?
– Mihir Mehta
Jun 23 '10 at 6:42
7
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Best way to convert an ArrayList to a string
...:
ArrayList<String> list = new ArrayList<String>();
list.add("one");
list.add("two");
list.add("three");
String listString = "";
for (String s : list)
{
listString += s + "\t";
}
System.out.println(listString);
In fact, a string concatenation is going to be just fine, as the ja...
What is the purpose of “return await” in C#?
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There is one sneaky case when return in normal method and return await in async method behave differently: when combined with using (or, more generally, any return await in a try block).
Consider these two versions of a method:
Task...
Waiting until two async blocks are executed before starting another block
When using GCD, we want to wait until two async blocks are executed and done before moving on to the next steps of execution. What is the best way to do that?
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Increase modal size for Twitter Bootstrap
... Just to clarify, if you only want to set the size of a specific modal, one can do this: #modal_ID .modal-dialog { width: 800px }
– Greg A
Jun 22 '17...
How to make a query with group_concat in sql server [duplicate]
... know that in sql server we cannot use Group_concat function but here is one issue i have in which i need to Group_Concat my query.I google it found some logic but not able to correct it.My sql query is
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What do the makefile symbols $@ and $< mean?
...the above variables has two variants for
compatibility with other makes. One variant returns only the directory
portion of the value. This is indicated by appending a “D” to the
symbol, $(@D), $(<D), etc. The other variant returns only the file
portion of the value. This is indicated ...
When to use Amazon Cloudfront or S3
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Amazon S3 is designed for large-capacity, low-cost file storage in one specific geographical region.* The storage and bandwidth costs are quite low.
Amazon CloudFront is a Content Delivery Network (CDN) which proxies and caches web data at edge locations as close to users as possible.
...