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How to open a file for both reading and writing?

Is there a way to open a file for both reading and writing? 4 Answers 4 ...
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Cron jobs and random times, within given hours

I need the ability to run a PHP script 20 times a day at completely random times. I also want it to run only between 9am - 11pm. ...
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Iterating over every two elements in a list

...+ y) In Python 3, you can replace izip with the built-in zip() function, and drop the import. All credit to martineau for his answer to my question, I have found this to be very efficient as it only iterates once over the list and does not create any unnecessary lists in the process. N.B: This ...
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Frequency table for a single variable

One last newbie pandas question for the day: How do I generate a table for a single Series? 4 Answers ...
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How to use OpenSSL to encrypt/decrypt files?

I want to crypt and decrypt one file using one password. 10 Answers 10 ...
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Set operations (union, intersection) on Swift array?

Are there any standard library calls I can use to either perform set operations on two arrays, or implement such logic myself (ideally as functionally and also efficiently as possible)? ...
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SQL NVARCHAR and VARCHAR Limits

...tring containing the dynamic SQL is growing over 4000 chars. Now, I understand that there is a 4000 max set for NVARCHAR(MAX) , but looking at the executed SQL in Server Profiler for the statement ...
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Convert PDF to clean SVG? [closed]

... Wikipedia to convert PDF to SVG. http://inkscape.org/ They even have a handy guide on how to do so! http://en.wikipedia.org/wiki/Wikipedia:Graphic_Lab/Resources/PDF_conversion_to_SVG#Conversion_with_Inkscape share ...
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PHP - Check if two arrays are equal

... $arraysAreEqual = ($a == $b); // TRUE if $a and $b have the same key/value pairs. $arraysAreEqual = ($a === $b); // TRUE if $a and $b have the same key/value pairs in the same order and of the same types. See Array Operators. EDIT The inequality operator is != whil...
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Which maven dependencies to include for spring 3.0?

I am trying to do my first project with Spring 3.0 (and maven). I have been using Spring 2.5 (and primer versions) in quite some projects. Nevertheless I am kinda confused, what modules I have to define as dependencies in my pom.xml. I just want to use the core container functions (beans, core, cont...