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Fix a Git detached head?
...ld like to incorporate the changes you made into master, run git merge tmp from the master branch. You should be on the master branch after running git checkout master.
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How to remove array element in mongodb?
... will find document with the given _id and remove the phone +1786543589455 from its contact.phone array.
You can use $unset to unset the value in the array (set it to null), but not to remove it completely.
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Why use HttpClient for Synchronous Connection
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@earthling, yes, Task.Run invokes the task from a ThreadPool, but you are calling .Result on it killing all the benefits from this and blocking the thread in which you called this .Result (which usually happens to be the main UI thread).
– Darin ...
How to keep index when using pandas merge
I would like to merge two DataFrames , and keep the index from the first frame as the index on the merged dataset. However, when I do the merge, the resulting DataFrame has integer index. How can I specify that I want to keep the index from the left data frame?
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Is using a lot of static methods a bad thing?
...n many situations this isn't possible (e.g., regular class code generation from XSD/WSDL/etc), or it will make the class very long, and transformation methods can often be a real pain for complex objects and you just want them in their own separate class. So yeah, I have static methods in utility cl...
Common programming mistakes for Clojure developers to avoid [closed]
...r code. This also happens frequently when you're refactoring, moving a var from one namespace to another.
Treating the for list comprehension like an imperative for loop
Essentially you're creating a lazy list based on existing lists rather than simply performing a controlled loop. Clojure's dos...
EC2 Can't resize volume after increasing size
...re increasing EBSs into larger sizes
Stop the instance
Create a snapshot from the volume
Create a new volume based on the snapshot increasing the size
Check and remember the current's volume mount point (i.e. /dev/sda1)
Detach current volume
Attach the recently created volume to the instance, sett...
#if DEBUG vs. Conditional(“DEBUG”)
... release mode (i.e. no DEBUG symbol), it will forever have the call to B() from within A() omitted, even if a call to A() is included because DEBUG is defined in the calling assembly.
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Getting a list item by index
I've recently started using c# moving over from Java. I can't seem to find how to get a list item by index. In java to get the first item of the list it would be:
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Change from SQLite to PostgreSQL in a fresh Rails project
I have a rails app that's databases are in SQLite (The dev and production). Since I am moving to heroku, I want to convert my database to PostgreSQL.
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