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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...
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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Best practices around generating OAuth tokens?
...ns without any record on host.
So we changed it to store everything in database and the token is simply an random number used as the key to the database. It has an username index so it's easy to list all the tokens for an user and revoke it.
We get quite few hacking activities. With random number, w...
What is data oriented design?
...ntities in your mental model of the problem. Since data is lumped together based on data usage, you won't always have sensible names to give your classes in Data Oriented Design.
Relation to relational databases
The thinking behind Data Oriented Design is very similar to how you think about relati...
Is there a simple way to remove multiple spaces in a string?
... ', ' ')
Tests run on a laptop with an i5 processor running Windows 7 (64-bit).
timeit.Timer(stmt = test, setup = setup).repeat(7, 1000)
test_string = 'The fox jumped over\n\t the log.' # trivial
Python 2.7.3, 32-bit, Windows
test | minum | maximum | average ...
Get Unix Epoch Time in Swift
... 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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Android - Launcher Icon Size
...ch one:
LDPI should be 36 x 36.
MDPI should be 48 x 48.
TVDPI should be 64 x 64.
HDPI should be 72 x 72.
XHDPI should be 96 x 96.
XXHDPI should be 144 x 144.
XXXHDPI should be 192 x 192.
Then just put each of them in the separate stalks of the drawable folder.
You are also required to give...
Structure padding and packing
...ed memory access is slower on architectures that allow it (like x86 and amd64), and is explicitly prohibited on strict alignment architectures like SPARC.
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print call stack in C or C++
...oost_stacktrace.cpp:29 (discriminator 2)
3# __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
4# _start in ./boost_stacktrace.out
0# boost::stacktrace::basic_stacktrace<std::allocator<boost::stacktrace::frame> >::basic_stacktrace() at /usr/include/boost/stacktrace/stacktrace.hpp:1...