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What is duck typing?
I came across the term duck typing while reading random topics on software online and did not completely understand it.
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master branch and 'origin/master' have diverged, how to 'undiverge' branches'?
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I had this and am mystified as to what has caused it, even after reading the above responses. My solution was to do
git reset --hard origin/master
Then that just resets my (local) copy of master (which I assume is screwed up) to the correct point, as represented by (remote) origin/mast...
How to import CSV file data into a PostgreSQL table?
...csv/ZIP_CODES.txt' DELIMITER ',' CSV
You can also specify the columns to read:
\copy zip_codes(ZIP,CITY,STATE) FROM '/path/to/csv/ZIP_CODES.txt' DELIMITER ',' CSV
See the documentation for COPY:
Do not confuse COPY with the psql instruction \copy. \copy invokes COPY FROM STDIN or COPY TO ST...
One DbContext per web request… why?
I have been reading a lot of articles explaining how to set up Entity Framework's DbContext so that only one is created and used per HTTP web request using various DI frameworks.
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Listing and deleting Git commits that are under no branch (dangling?)
...c --prune=now
But be certain that this is what you want. I recommend you read the man pages but here is the gist:
git gcremoves unreachable objects (commits, trees, blobs (files)). An object is unreachable if it isn't part of the history of some branch. Actually it is a bit more complicated:
git...
What is the difference between Hibernate and Spring Data JPA
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JPA : Java persistence api which provide specification for persisting, reading, managing data from your java object to relations in database.
Hibernate: There are various provider which implement jpa. Hibernate is one of them. So we have other provider as well. But if using jpa with spring it al...
Spring - @Transactional - What happens in background?
...pic. The Spring reference doc devotes multiple chapters to it. I recommend reading the ones on Aspect-Oriented Programming and Transactions, as Spring's declarative transaction support uses AOP at its foundation.
But at a very high level, Spring creates proxies for classes that declare @Transaction...
What is a “batch”, and why is GO used?
I have read and read over MSDN, etc. Ok, so it signals the end of a batch.
6 Answers
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Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap
...edium screens (some desktops)
lg = large screens (remaining desktops)
Read the "Grid
Options"
chapter from the official Bootstrap documentation for more details.
You should usually classify a div using multiple column classes so it behaves differently depending on the screen size (this is...
How to maintain a Unique List in Java?
...dvantages and disadvantages to each collection. Some fast inserts but slow reads, some have fast reads but slow inserts, etc. It makes sense to spend a fair amount of time with the collections documentation to fully learn about the finer details of each class and interface.
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