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... community wiki
9 revs, 4 users 72%Bill
17
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Any reason why scala does not explicitly support dependent types?
...a type constructor - a value for that is here: github.com/scala/scala/blob/v2.10.3/src/library/scala/…, and doesn't seem particularly different than a witness for an equality proposition in dependently-typed languages like Agda and Idris: refl. (See www2.tcs.ifi.lmu.de/~abel/Equality.pdf section 2...
How to avoid reinstalling packages when building Docker image for Python projects?
...)
The output of docker build:
Step 1 : WORKDIR /srv
---> Running in 22d725d22e10
---> 55768a00fd94
Removing intermediate container 22d725d22e10
Step 2 : ADD ./requirements.txt /srv/requirements.txt
---> 968a7c3a4483
Removing intermediate container 5f4e01f290fd
Step 3 : RUN pip install -r r...
Do sealed classes really offer performance Benefits?
...atchConsoleApplicationFX4.NormalClass)
003c00b8 e8631fdbff call 00172020 (JitHelp: CORINFO_HELP_NEWSFAST)
003c00bd e80e70106f call mscorlib_ni+0x2570d0 (6f4c70d0) (System.Console.get_Out(), mdToken: 060008fd)
003c00c2 8bc8 mov ecx,eax
003c00c4 8b1530203003 mov e...
Redis strings vs Redis hashes to represent JSON: efficiency?
...mory" => "1251944",
**"used_memory_human" => "1.19M"**, # ~ 72b per key/value
.....
}
> redis.flushdb
=> "OK"
# setting **only one value** +1 byte per hash of 512 values equal to set them all +1 byte
> redis.pipelined{ 10000.times{ |i| redis.me_set( "t...
Why were pandas merges in python faster than data.table merges in R in 2012?
...-+
| q1 | 6.32 | 89.0 | 14 |
| q2 | 5.72 | 108.0 | 18 |
| q3 | 11.00 | 56.9 | 5 |
| q4 | 5.57 | 90.1 | 16 |
| q5 | 30.70 | 731.0 | 23 |
+-----------+--------------+----------+--------+
...
Git for beginners: The definitive practical guide
...g name] [revision SHA1 hash]
For example:
git tag 1.1.1 81b15a68c6c3e71f72e766931df4e6499990385b
Note: by default, git creates a "lightweight" tag (basically a reference to a specific revision). The "right" way is to use the -a flag. This will launch your editor asking for a tag message (iden...
Why is “while ( !feof (file) )” always wrong?
...1:15
fuz
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answered Oct 24 '14 at 22:28
Kerrek SBK...
Using @property versus getters and setters
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72
While I agree in most cases, be careful about hiding slow methods behind a @property decorator. The user of your API expects that property ...
What exactly is a reentrant function?
...
CliffordClifford
72.2k1010 gold badges7676 silver badges141141 bronze badges
a...