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In Clojure, when should I use a vector over a list, and the other way around?
...ctor:
Indexed access performance - You get ~O(1) cost for indexed access vs. O(n) for lists
Appending - with conj is ~O(1)
Convenient notation - I find it both easier to type and to read [1 2 3] than '(1 2 3) for a literal list in circumstances where either would work.
When to use a list:
When...
Which .NET Dependency Injection frameworks are worth looking into? [closed]
...Assembly scanning extensions for Microsoft.Extensions.DependencyInjection.
VS MEF - Managed Extensibility Framework (MEF) implementation used by Visual Studio.
TinyIoC - An easy to use, hassle free, Inversion of Control Container for small projects, libraries and beginners alike.
Original answer f...
Why does Java's hashCode() in String use 31 as a multiplier?
...cause it leads to denser code: The two LEA instructions only take 6 bytes vs. the 7 bytes for move+shift+subtract for the multiplication by 31. One possible caveat is that the 3-argument LEA instructions used here became slower on Intel's Sandy bridge architecture, with an increased latency of 3 c...
Java: Multiple class declarations in one file
...vel interfaces as well.
e.g., elsewhere on SO: Non-public top-level class vs static nested class
As for changes in behavior between versions, there was this discussion about something that "worked perfectly" in 1.2.2. but stopped working in 1.4 in sun's forum: Java Compiler - unable to declare a n...
Difference between 2 dates in SQLite
...lized there's a better solution to that problem that I was having: SQLite vs. Oracle - Calculating date differences - hours
Instead, as was pointed out to me, for dates stored in local time, make both match to local time:
SELECT julianday('now', 'localtime') - julianday(DateCreated) FROM Payment;...
What is the difference between class and instance methods?
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Perfect explanation of Class vs Instance of a class. Classes are a strange concept to newbies and this explains it in its most fundamental way.
– Alex McPherson
Jan 13 '16 at 15:17
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Can we append to a {% block %} rather than overwrite?
...template but not as well when including one, ie:
{% extends "base.html" %} vs. {% include "partial.html" %}
Say you want to include a template in the middle of your page and you'd also like it to add some javascript in a block at the end of the page: calling block.super in the included template wil...
Validation failed for one or more entities. See 'EntityValidationErrors' property for more details [
...ven need to have a try/catch block. Just stick this in the watch list when VS breaks and voila.. you've got the validation errors in front of you.
– theyetiman
Nov 5 '14 at 15:46
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Android: allow portrait and landscape for tablets, but force portrait on phone?
...PI. Whereas the question is related to physical device screen size - phone VS tablet. Meaning, you can have a Configuration.SCREENLAYOUT_SIZE_NORMAL and it would be an MDPI tablet.
– nightfixed
Mar 15 '16 at 9:13
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Web workers without a separate Javascript file?
... answered Jun 23 '11 at 13:19
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