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How do I make a branch point at a specific commit? [duplicate]

... You can make master point at 1258f0d0aae this way: git checkout master git reset --hard 1258f0d0aae But you have to be careful about doing this. It may well rewrite the history of that branch. That would create problems if you have published it and other ...
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How to save a dictionary to a file?

I have problem with changing a dict value and saving the dict to a text file (the format must be same), I only want to change the member_phone field. ...
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Ruby on Rails: How do I add placeholder text to a f.text_field?

How can I add placeholder text to my f.text_field fields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text? ...
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Import multiple csv files into pandas and concatenate into one DataFrame

I would like to read several csv files from a directory into pandas and concatenate them into one big DataFrame. I have not been able to figure it out though. Here is what I have so far: ...
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How to get process ID of background process?

I start a background process from my shell script, and I would like to kill this process when my script finishes. 7 Answers...
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best way to preserve numpy arrays on disk

I am looking for a fast way to preserve large numpy arrays. I want to save them to the disk in a binary format, then read them back into memory relatively fastly. cPickle is not fast enough, unfortunately. ...
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?

In the following method definitions, what does the * and ** do for param2 ? 22 Answers ...
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Get path from open file in Python

If I have an opened file, is there an os call to get the complete path as a string? 4 Answers ...
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PHP Array to CSV

I'm trying to convert an array of products into a CSV file, but it doesn't seem to be going to plan. The CSV file is one long line, here is my code: ...
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What is a lambda expression in C++11?

What is a lambda expression in C++11? When would I use one? What class of problem do they solve that wasn't possible prior to their introduction? ...