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Efficiently test if a port is open on Linux?
...ocesses, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127.0.0.1/445 || echo "No one is listening!"
exec 6>&- # close output connection
exec 6<&- # close input connection
To determine if som...
Where to find Application Loader app in Mac?
... In xcode 11, you can use Transpoter application for sending the ipa to test flight.
– vicky keshri
Dec 18 '19 at 9:17
1
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jQuery hasAttr checking to see if there is an attribute on an element [duplicate]
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This test actually fails in chrome (and likely all webkit) because a nonexistent attribute in those browsers returns 'false' instead of undefined. karim79 is soooo close, but this will work better: $.fn.hasAttr = function(attr) { ...
Django filter versus get for single object?
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That test is pretty unfair. A large part of the overhead in throwing an exception is the handling of the stack trace. That test had a stack length of 1 which is much lower than you would usually find in an application.
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Generating random strings with T-SQL
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When generating random data, specially for test, it is very useful to make the data random, but reproducible. The secret is to use explicit seeds for the random function, so that when the test is run again with the same seed, it produces again exactly the same strings...
How to insert element into arrays at specific position?
... you can return $temp instead if you don't use class array
}
Now you can test the code using
//1
$result = insert(array(1,2,3,4,5),0, 0);
echo "<pre>";
echo "<br/>";
print_r($result);
echo "</pre>";
//2
$result = insert(array(1,2,3,4,5),2, "a");
echo "<pre>";
print_r($res...
How to find indices of all occurrences of one string in another in JavaScript?
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+1. I ran some tests for comparison against a solution using Regex. The fastest method was the one using Regex: jsperf.com/javascript-find-all
– StuR
May 8 '13 at 11:11
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How would I run an async Task method synchronously?
...he marked answer - I was just looking for a way of switching off async for testing code that just there to stop the ui from hanging
– JonnyRaa
Sep 25 '14 at 11:17
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How to Query an NTP Server using C#?
...o be cut-and-pasted directly from the Internet into production code (after testing and review of course).
– dodgy_coder
Sep 23 '14 at 5:33
2
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Connect Java to a MySQL database
...:
Connection conn = dataSource.getConnection();
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT ID FROM USERS");
...
rs.close();
stmt.close();
conn.close();
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