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git merge: apply changes to code that moved to a different file
... one before the commits you want to merge; most likely, this is the commit from which you branched out to implement your changes. As user @digory doo wrote below, you can do git merge-base master local to find X.
---- X (move)-----CP----- (master)
\
`--A---B--- (local)
On this br...
Should I use an exception specifier in C++?
...is always better to let the application crash with an unhandled exception, from which you can retrieve a stack-trace, than to silently/violently die.
Write code that returns common errors and throws on exceptional occasions.
Error e = open( "bla.txt" );
if( e == FileNotFound )
MessageUser( "Fil...
Firebase Storage How to store and Retrieve images [closed]
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I ended up storing the images in base64 format myself. I translate them from their base64 value when called back from firebase.
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How to do a non-greedy match in grep?
...ds, try to avoid wildcards.
For example, to fetch all links to jpeg files from the page content, you'd use:
grep -o '"[^" ]\+.jpg"'
To deal with multiple line, pipe the input through xargs first. For performance, use ripgrep.
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Good open source django project for learning [closed]
...d tricks by reading their source. It is definitely a good example to learn from.
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How can you do anything useful without mutable state?
...tand the syntax and underlying principles, then your eyes just glaze over. From your point of view, it looks as if I'm doing the same thing as an imperative language, but just setting up all kinds of boundaries to purposefully make programming more difficult. My point of view, you're just experienci...
Which kind of pointer do I use when?
...the object is owned.
Note that ownership in a software system is separate from ownership as we would think of it outside of software. For example, a person might "own" their home, but that doesn't necessarily mean that a Person object has control over the lifetime of a House object. Conflating thes...
Undefined reference to `pow' and `floor'
...
U pow
U printf
Where nm lists symbols from object file. You can see that this was compiled without an error, but pow, floor, and printf functions have undefined references, now if I will try to link this to executable:
$ gcc fib.o
fib.o: In function `fibo':
fib....
What are the pros and cons of performing calculations in sql vs. in your application
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I think that a good rule of thumb is: don't bring back from SQL server rows of data you don't ultimately need. For example, if you have to perform aggregate operations, they likely belong in SQL. Joins between tables or subqueries? SQL. That's also the approach we use with badges...
How to escape special characters in building a JSON string?
.... If you simply use language or library functions to convert things to and from JSON, you'll never even need to know JSON's escaping rules. This is what the misguided question asker here ought to have done.
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