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How to compare two NSDates: Which is more recent?

I am trying to achieve a dropBox sync and need to compare the dates of two files. One is on my dropBox account and one is on my iPhone. ...
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How to automatically convert strongly typed enum into int?

... Strongly typed enums aiming to solve multiple problems and not only scoping problem as you mentioned in your question: Provide type safety, thus eliminating implicit conversion to integer by integral promotion. Specify underlying types. Provide strong scoping. Thus, it is imp...
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Best programming aids for a quadriplegic programmer

... the heading of, "There, but for the grace of God, go you or I." This is brand new territory for me so I'm asking for some serious help here. ...
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How to get the process ID to kill a nohup process?

... When using nohup and you put the task in the background, the background operator (&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process i...
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How can I read command line parameters from an R script?

I've got a R script for which I'd like to be able to supply several command-line parameters (rather than hardcode parameter values in the code itself). The script runs on Windows. ...
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What is “with (nolock)” in SQL Server?

...alent of using READ UNCOMMITED as a transaction isolation level. So, you stand the risk of reading an uncommitted row that is subsequently rolled back, i.e. data that never made it into the database. So, while it can prevent reads being deadlocked by other operations, it comes with a risk. In a bank...
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What is eager loading?

...on't do any calculations until you access an element of the result matrix; and Over-eager loading: this is where you try and anticipate what the user will ask for and preload it. I hope that makes sense in the context you're seeing it. Let me give you a "Webby" example. Imagine a page with rollo...
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Twitter bootstrap 3 two columns full height

...ull-height columns (due to the custom css-table properties which we added) and with ratio 1:3 (Navigation:Content) for medium screen widths and above - (due to bootstrap's default classes: col-md-3 and col-md-9) NB: 1) In order not to mess up bootstrap's native column classes we add another clas...
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What is an NP-complete in computer science?

... NP stands for Non-deterministic Polynomial time. This means that the problem can be solved in Polynomial time using a Non-deterministic Turing machine (like a regular Turing machine but also including a non-deterministic "choice"...
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Why is printing to stdout so slow? Can it be sped up?

...ement. After some recent painfully slow logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results. ...