大约有 45,000 项符合查询结果（耗时：0.0568秒） [XML]
What are the options for storing hierarchical data in a relational database? [closed]
...consider to be a small million node hierarchy.
I thought I'd give Celko a bit of competition by coming up with a method to convert an Adjacency List to Nested sets at speeds that just seem impossible. Here's the performance of the push stack method on my i5 laptop.
Duration for 1,000 Nodes = 0...
Select DISTINCT individual columns in django?
... |
edited Sep 9 '11 at 10:06
Tomasz Zieliński
14.9k77 gold badges5252 silver badges7070 bronze badges
...
Prevent tabstop on A element (anchor link) in HTML
...oiRoberto Aloi
28k1717 gold badges6262 silver badges108108 bronze badges
22
...
List of encodings that Node.js supports
...odules/iconv
> node-gyp rebuild
gyp http GET http://nodejs.org/dist/v0.10.1/node-v0.10.1.tar.gz
gyp http 200 http://nodejs.org/dist/v0.10.1/node-v0.10.1.tar.gz
xcode-select: Error: No Xcode is selected. Use xcode-select -switch <path-to-xcode>, or see the xcode-select manpage (man xcode-se...
Is there any haskell function to concatenate list with separator?
..."such","a","function","?"]
"is there such a function ?"
intersperse is a bit more general:
Prelude> import Data.List
Prelude Data.List> concat (intersperse " " ["is","there","such","a","function","?"])
"is there such a function ?"
Also, for the specific case where you want to join with a ...
Spark java.lang.OutOfMemoryError: Java heap space
...formation regarding how to efficiently back your data into bytes, USE IT!
(bit hacky) Again when caching, consider using a Dataset to cache your structure as it will use more efficient serialisation. This should be regarded as a hack when compared to the previous bullet point. Building your domain ...
Boolean vs boolean in Java
...
I am a bit extending provided answers (since so far they concentrate on their "own"/artificial terminology focusing on programming a particular language instead of taking care of the bigger picture behind the scene of creating the p...
What is an uber jar?
...s for them.
You can perform that :
basically with maven-assembly-plugin
a bit more further with maven-shade-plugin
A cleaner solution is to provide their library separately; maven-shade-plugin has preconfigured descriptor for that. This is not more complicated to do (with maven and its plugin).
Fi...
Designing function f(f(n)) == -n
... return -1 * (n + 1)
Python automatically promotes integers to arbitrary length longs. In other languages the largest positive integer will overflow, so it will work for all integers except that one.
To make it work for real numbers you need to replace the n in (-1)n with { ceiling(n) i...
Why do we need to install gulp globally and locally?
...gulp, jshint, etc. Unfortunately it seems you end up fighting the tools a bit when you go against the grain.
share
|
improve this answer
|
follow
|
...