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How can I find the first occurrence of a sub-string in a python string?
... = "the dude is a cool dude"
word = 'dude1'
print(find_pos(string,word))
# output 4
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How does the ThreadStatic attribute work?
...Compilers that emit to IL like VB.NET and C# don't need to know anything about Win32 TLS in order to emit IL code that can read and write a variable that has the ThreadStatic attribute. There's nothing special about the variable as far as C# knows - it's just a location to read and write stuff. Th...
How to access a preexisting collection with Mongoose?
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Same here, I spend many hours figuring out this issue, the document is found here mongoosejs.com/docs/guide.html#collection
– ElvinD
Sep 16 '15 at 6:50
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The SQL OVER() clause - when and why is it useful?
I read about that clause and I don't understand why I need it.
What does the function Over do? What does Partitioning By do?
Why can't I make a query with writing Group By SalesOrderID ?
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What integer hash function are good that accepts an integer hash key?
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On closer inspection, it turns out 2654435761 is actually a prime number. So that's probably why it was chosen rather than 2654435769.
– karadoc
Dec 5 '13 at 12:13
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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
...ses in bytecode, because of intrinsic limitations of the JVM.
This arises out of the fact that not everything in Java is an object. In addition to objects, there are primitives. All objects in Java are descendant from java.lang.Object, but primitives are set apart and, presently*, not extensible by...
Rails find_or_create_by more than one attribute?
...p_id => 7).first_or_initialize
Edit 2: Not all of these were factored out of rails just the attribute specific ones.
https://github.com/rails/rails/blob/4-2-stable/guides/source/active_record_querying.md
Example
GroupMember.find_or_create_by_member_id_and_group_id(4, 7)
became
GroupMem...
GroupBy pandas DataFrame and select most common value
...y']).agg(lambda x:x.value_counts().index[0])
In case you are wondering about performing other agg functions in the .agg()
try this.
# Let's add a new col, account
source['account'] = [1,2,3,3]
source.groupby(['Country','City']).agg(mod = ('Short name', \
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Xcode 6 / Beta 4: using bridging headers with framework targets is unsupported
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@zaxy78 check out the "Importing Swift into Objective-C" section of this document: developer.apple.com/library/ios/documentation/Swift/Conceptual/…
– DeepFriedTwinkie
Jan 29 '15 at 20:06
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Ignore mouse interaction on overlay image
...ccording to this caniuse.com/#search=pointer-events, only Opera and iE are out
– Logic Wreck
Oct 24 '12 at 14:15
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