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Convert hex string to int in Python
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x = int("deadbeef", 16)
With the 0x prefix, Python can distinguish hex and decimal automatically.
>>> print int("0xdeadbeef", 0)
3735928559
>>> print int("10", 0)
10
(You must specify 0 as the base in order to invoke this prefix-guessing behavior; omitting the second paramet...
Determine the process pid listening on a certain port
As the title says, I'm running multiple game servers, and every of them has the same name but different PID and the port number. I would like to match the PID of the server which is listening on certain port, and then I would like to kill this process. I need that in order to complete my bas...
Scala constructor overload?
...ary Constructors in Scala must either call the primary constructor (as in landon9720's) answer, or another auxiliary constructor from the same class, as their first action. They cannot simply call the superclass's constructor explicitly or implicitly as they can in Java. This ensures that the primar...
How to redirect the output of an application in background to /dev/null
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You use:
yourcommand > /dev/null 2>&1
If it should run in the Background add an &
yourcommand > /dev/null 2>&1 &
>/dev/null 2>&1 means redirect stdout to /dev/null AND stderr to the place where stdo...
PHP Pass variable to next page
...you use something like sessions, cookies or GET / POST variables. Sessions and cookies are quite easy to use, with session being by far more secure than cookies. More secure, but not completely secure.
Session:
//On page 1
$_SESSION['varname'] = $var_value;
//On page 2
$var_value = $_SESSION['var...
What is the difference between “Flush Magento Cache” and “Flush Cache Storage” in magento's cache ma
What is the difference between "Flush Magento Cache" and "Flush Cache Storage" in magento's cache management?
10 Answers
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How to cast an object in Objective-C
... Great answer. You could make it a little clearer by breaking out the cast and assignment into two lines.
– Guido Anselmi
Jun 3 '14 at 21:06
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Scala @ operator
... specifically, though I don't know where the "as usual" there came from -- and 8.12 only speak of regular expression pattern (_*). But maybe this has been clarified on a newer version of the spec.
– Daniel C. Sobral
Mar 2 '10 at 22:58
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Deleting DataFrame row in Pandas based on column value
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If I'm understanding correctly, it should be as simple as:
df = df[df.line_race != 0]
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How do I concatenate two lists in Python?
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does this create a deep copy of listone and appends listtwo?
– Daniel F
Apr 19 '12 at 12:34
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