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How can I read large text files in Python, line by line, without loading it into memory?
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@bawejakunal, Do you mean if a line is too long to load into memory at once? That is unusual for a text file. Instead of using for loop which iterates over the lines, you can use chunk = infile.read(chunksize) to read limited size chunks regardle...
ActiveRecord.find(array_of_ids), preserving order
When you do Something.find(array_of_ids) in Rails, the order of the resulting array does not depend on the order of array_of_ids .
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Sorting data based on second column of a file
... fifth character in each line)
-n - this option specifies a "numeric sort" meaning that column should be interpreted as a row of numbers, instead of text.
More:
Other common options include:
-r - this option reverses the sorting order. It can also be written as --reverse.
-i - This option ign...
Entity Framework Join 3 Tables
...he former, and you'd like to edit the post to have a better layout, by all means have at it. I'm still new to entity framework and am still soaking in best practices so if you have suggestions to make this answer more eloquent for future users I'd appreciate the assistance.
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asynchronous vs non-blocking
...t know what thread your callback will be called on).
So they don't always mean the same thing. To distil the socket example, we could say:
Blocking and synchronous mean the same thing: you call the API, it hangs up the thread until it has some kind of answer and returns it to you.
Non-blocking me...
What's the difference between passing by reference vs. passing by value?
...fusion is the fact that in "pass by reference", "reference" has a narrower meaning than the general term "reference" (because the phrase predates it).
Now, the authentic definition is:
When a parameter is passed by reference, the caller and the callee use the same variable for the parameter. If...
AngularJS - difference between pristine/dirty and touched/untouched
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does it mean that if control is touched it is dirty for sure? is the lost focus considered an interaction?
– Sasuke Uchiha
Sep 9 at 16:42
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Git clone without .git directory
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what does !$/.git mean?
– Jürgen Paul
Jul 8 '13 at 18:00
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Command to change the default home directory of a user
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@STW Is this a reversible task? Meaning if I just run it once and then flip the parameters, will my home directory be exactly the way it was before?
– DanGordon
Mar 22 '18 at 17:34
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SQL Server query to find all permissions/access for all users in a database
...at a query, based on Andomar's suggestions. This query is intended to provide a list of permissions that a user has either applied directly to the user account, or through
roles that the user has.
/*
Security Audit Report
1) List all access provisioned to a sql user or windows user/group directly ...