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How to create PDFs in an Android app? [closed]

Is there any way to create PDF Files from an Android application? 8 Answers 8 ...
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Best practices for overriding isEqual: and hash

How do you properly override isEqual: in Objective-C? The "catch" seems to be that if two objects are equal (as determined by the isEqual: method), they must have the same hash value. ...
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How to secure database passwords in PHP?

When a PHP application makes a database connection it of course generally needs to pass a login and password. If I'm using a single, minimum-permission login for my application, then the PHP needs to know that login and password somewhere. What is the best way to secure that password? It seems like ...
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How do you return the column names of a table?

How would I return the column names of a table using SQL Server 2008? i.e. a table contains these columns- id, name, address, country and I want to return these as data. ...
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Why can lambdas be better optimized by the compiler than plain functions?

In his book The C++ Standard Library (Second Edition) Nicolai Josuttis states that lambdas can be better optimized by the compiler than plain functions. ...
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How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?

A common trick for vertical positioning elements is to use the following CSS: 7 Answers ...
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How can I extract a predetermined range of lines from a text file on Unix?

I have a ~23000 line SQL dump containing several databases worth of data. I need to extract a certain section of this file (i.e. the data for a single database) and place it in a new file. I know both the start and end line numbers of the data that I want. ...
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Difference between JVM and HotSpot?

What exactly is HotSpot and how does it relate to JVM and OpenJDK? Is it a library? What exactly does it do? 6 Answers ...
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How can I obtain the element-wise logical NOT of a pandas Series?

I have a pandas Series object containing boolean values. How can I get a series containing the logical NOT of each value? ...
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Can I get a list of files marked --assume-unchanged?

What have I marked as --assume-unchanged ? Is there any way to find out what I've tucked away using that option? 5 Answers...