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How do I select a merge strategy for a git rebase?
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236
You can use this with Git v1.7.3 or later versions.
git rebase --strategy-option theirs ${bra...
How to create an object for a Django model with a many to many field?
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248
You cannot create m2m relations from unsaved objects. If you have the pks, try this:
sample_o...
How to match a String against string literals in Rust?
... => println!("0"),
"b" => println!("1"),
"c" => println!("2"),
_ => println!("something else!"),
}
There's also an as_str method as of Rust 1.7.0:
match stringthing.as_str() {
"a" => println!("0"),
"b" => println!("1"),
"c" => println!("2"),
_ =>...
in_array multiple values
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200
Intersect the targets with the haystack and make sure the intersection is precisely equal to t...
Integrate ZXing in Android Studio
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234
I was integrating ZXING into an Android application and there were no good sources for the inp...
Enable 'xp_cmdshell' SQL Server
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answered Feb 27 '11 at 4:43
Pero P.Pero P.
20.9k66 gold badges5252 silver badges7878 bronze badges
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Join a list of strings in python and wrap each string in quotation marks
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answered Aug 17 '12 at 14:28
jamylakjamylak
104k2222 gold badges206206 silver badges215215 bronze badges
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Adding a new array element to a JSON object
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242
JSON is just a notation; to make the change you want parse it so you can apply the changes to ...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...s in the array, despite h[1] still giving us a value? Here’s a hint:
h[42] #=> ["a", "b"]
The array returned by each [] call is just the default value, which we’ve been mutating all this time so now contains our new values. Since << doesn’t assign to the hash (there can never be a...
how to calculate binary search complexity
...rer as informal ones:
The question is, how many times can you divide N by 2 until you have 1? This is essentially saying, do a binary search (half the elements) until you found it. In a formula this would be this:
1 = N / 2x
multiply by 2x:
2x = N
now do the log2:
log2(2x) = l...