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How can I remove 3 characters at the end of a string in php?
...length is given and is negative, then that many characters will be omitted from the end of string
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Do we need semicolon at the end? [duplicate]
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It's not true that semicolon is not required. From the spec: Certain ECMAScript statements **must** be terminated with semicolons. bclary.com/2004/11/07/#a-7.9
– John K
Oct 23 '10 at 3:14
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Case insensitive string as HashMap key
...operations. Not an issue for most applications, but worth keeping in mind. From JavaDoc: "This implementation provides guaranteed log(n) time cost for the containsKey, get, put and remove operations. Algorithms are adaptations of those in Cormen, Leiserson, and Rivest's Introduction to Algorithms."
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ElasticSearch: Unassigned Shards, how to fix?
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OK, I've solved this with some help from ES support. Issue the following command to the API on all nodes (or the nodes you believe to be the cause of the problem):
curl -XPUT 'localhost:9200/<index>/_settings' \
-d '{"index.routing.allocation.disabl...
SSL Error: unable to get local issuer certificate
...SHA256 certificate, you will need the SHA256 intermediate. You can grab it from here: http://secure2.alphassl.com/cacert/gsalphasha2g2r1.crt
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Groovy Shell warning “Could not open/create prefs root node …”
...o a backport for Java8 which is in u202.
What you see is really a warning from the JDK's internal logger. It is not an exception. I believe that the warning can be safely ignored .... unless the user code is indeed wanting the system preferences, but that is very rarely the case.
Bonus info
The ...
How to get the last element of an array in Ruby?
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Use -1 index (negative indices count backward from the end of the array):
a[-1] # => 5
b[-1] # => 6
or Array#last method:
a.last # => 5
b.last # => 6
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Maximum call stack size exceeded error
...error. Actually the JS file is not my own creation, but is a library file (from DWR engine.js)..directwebremoting.org Also when you say "debugger to check the call stack ", how do I do that using the Safari Inspector?
– testndtv
May 23 '11 at 9:58
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Best way to check if a URL is valid
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<?php
$url = "http://www.qbaki.com";
// Remove all illegal characters from a url
$url = filter_var($url, FILTER_SANITIZE_URL);
// Validate url
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
echo("$url is a valid URL");
} else {
echo("$url is not a valid URL");
}
?>
Possible flags...
Check if directory mounted with bash
...ing the mount command without arguments will tell you the current mounts. From a shell script, you can check for the mount point with grep and an if-statement:
if mount | grep /mnt/md0 > /dev/null; then
echo "yay"
else
echo "nay"
fi
In my example, the if-statement is checking the exit...