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Python dictionary: Get list of values for list of keys
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A little speed comparison:
Python 2.7.11 |Anaconda 2.4.1 (64-bit)| (default, Dec 7 2015, 14:10:42) [MSC v.1500 64 bit (AMD64)] on win32
In[1]: l = [0,1,2,3,2,3,1,2,0]
In[2]: m = {0:10, 1:11, 2:12, 3:13}
In[3]: %timeit [m[_] for _ in l] # list comprehension
1000000 loops, best of 3...
Where is SQL Server Management Studio 2012?
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Just download SQLEXPRWT_x64_ENU.exe from Microsoft Downloads - SQL Server® 2012 Express with SP1
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Best practices for circular shift (rotate) operations in C++
...motion rules mean that rotl_template(u16 & 0x11UL, 7) would do a 32 or 64-bit rotate, not 16 (depending on the width of unsigned long). Even uint16_t & uint16_t is promoted to signed int by C++'s integer-promotion rules, except on platforms where int is no wider than uint16_t.
On x86, th...
How to sparsely checkout only one single file from a git repository?
...it doesn't store files as you think (as CVS/SVN do), but it generates them based on the entire history of the project.
But there are some workarounds for specific cases. Examples below with placeholders for user, project, branch, filename.
GitHub
wget https://raw.githubusercontent.com/user/projec...
Maintain aspect ratio of div but fill screen width and height in CSS?
...tio for the div, and the text matching its scale exactly.
Initial size is based on full width:
div {
width: 100vw;
height: calc(100vw * 9 / 16);
font-size: 10vw;
/* align center */
margin: auto;
position: absolute;
top: 0px; right: 0px; bottom: 0px; left: 0px;
/* visual indicat...
SparseArray vs HashMap
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@PaulBoddington Collections are based on objects not on primitive so it wont work within the Collections API
– Rod_Algonquin
Aug 29 '14 at 3:00
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What is the difference between Int and Integer?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Why Large Object Heap and why do we care?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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When to use enumerateObjectsUsingBlock vs. for
...he representation for fast enumeration. There is overhead therein. Block-based enumeration allows the collection class to enumerate contents as quickly as the fastest traversal of the native storage format. Likely irrelevant for arrays, but it can be a huge difference for dictionaries.
"Don't use...
Generating random strings with T-SQL
...is to compute @dice = rand(@seed) * len(@specials)+1 to make the indexes 1 based.
– Remus Rusanu
Feb 17 '16 at 13:42
T...