大约有 3,285 项符合查询结果（耗时：0.0261秒） [XML]
What is a “Bitmap heap scan” in a query plan?
...e (slow), and further access will hit the cache in memory (Postgres cache (fast) or OS cache (faster)).
– Matthieu
Sep 7 '18 at 13:14
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Accessing JPEG EXIF rotation data in JavaScript on the client side
...ascript library I wrote a little code that extracts the orientation tag as fast as possible (It uses DataView and readAsArrayBuffer which are available in IE10+, but you can write your own data reader for older browsers):
function getOrientation(file, callback) {
var reader = new FileReade...
Export specific rows from a PostgreSQL table as INSERT SQL script
...e table row per line as plain text (not INSERT commands), it's smaller and faster:
COPY (SELECT * FROM nyummy.cimory WHERE city = 'tokio') TO '/path/to/file.csv';
Import the same to another table of the same structure anywhere with:
COPY other_tbl FROM '/path/to/file.csv';
COPY writes and read...
How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?
...d timezone support.
date-fns [added 2017-03-29, thanks to Fractalf] Small, fast, works with standard JS date objects. Great alternative to Moment if you don't need timezone support.
SugarJS - A general helper library adding much needed features to JavaScripts built-in object types. Includes some exc...
Best way to read a large file into a byte array in C#?
...and BufferedStream.
As always a simple sample program to profile which is fastest will be most beneficial.
Also your underlying hardware will have a large effect on performance. Are you using server based hard disk drives with large caches and a RAID card with onboard memory cache? Or are you us...
Excel to CSV with UTF8 encoding [closed]
...encoded-utf8.csv
(remember to replace cp1250 with your encoding).
Works fast and great for big files like post codes database, which cannot be imported to GoogleDocs (400.000 cells limit).
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Is there common street addresses database design for all addresses of the world? [closed]
...tabase design for storing street addresses? It should be so simple to use, fast to query and dynamic to store all street addresses of the world which is identifying just by one id Thanks a lot
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Use of *args and **kwargs [duplicate]
... is {mynum}x more fun!".format(**locals())
I'm not sure if it's terribly fast when compared to just using the names themselves, but it's a lot easier to type!
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Why should I use document based database instead of relational database?
...h CouchDB. I recently made a web app that utilizes CouchDB and it's rocket fast while also able to handle a constantly-varying data structure.
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Java Map equivalent in C#
...alue))
{
otherExample["key"] = value + 1;
}
With this method you can fast and exception-less get values (if present).
Resources:
Dictionary-Keys
Try Get Value
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