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File I/O in Every Programming Language [closed]
... read a line from a text file? Then the next question is always how do i write it back.
80 Answers
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How do you roll back (reset) a Git repository to a particular commit? [duplicate]
I cloned a Git repository and then tried to roll it back to a particular commit early on in the development process. Everything that was added to the repository after that point is unimportant to me so I want to omit all subsequent changes from my local source code.
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AngularJS does not send hidden field value
For a specific use case I have to submit a single form the "old way". Means, I use a form with action="". The response is streamed, so I am not reloading the page. I am completely aware that a typical AngularJS app would not submit a form that way, but so far I have no other choice.
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How to convert int to char with leading zeros?
I need to convert int datafield to nvarchar with leading zeros
17 Answers
17
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Best way to select random rows PostgreSQL
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Given your specifications (plus additional info in the comments),
You have a numeric ID column (integer numbers) with only few (or moderately few) gaps.
Obviously no or few write operations.
Your ID column has to be indexed! A primary key serves nicely.
Th...
How to get the nvidia driver version from the command line?
For debugging CUDA code and checking compatibilities I need to find out what nvidia driver version for the GPU I have installed. I found How to get the cuda version? but that does not help me here.
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List all indexes on ElasticSearch server?
...ses
this will give you a list of indices and their aliases.
If you want it pretty-printed, add pretty=true:
curl http://localhost:9200/_aliases?pretty=true
The result will look something like this, if your indices are called old_deuteronomy and mungojerrie:
{
"old_deuteronomy" : {
"alia...
How can you search Google Programmatically Java API [closed]
Does anyone know if and how it is possible to search Google programmatically - especially if there is a Java API for it?
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How safe is it to store sessions with Redis?
I'm currently using MySql to store my sessions. It works great, but it is a bit slow.
3 Answers
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Permission denied (publickey) when SSH Access to Amazon EC2 instance [closed]
...cate.
These are common reasons that can cause that:
Trying to connect with the wrong key. Are you sure this instance is using this keypair?
Trying to connect with the wrong username. ubuntu is the username for the ubuntu based AWS distribution, but on some others it's ec2-user (or admin on some ...