大约有 14,000 项符合查询结果（耗时：0.0303秒） [XML]
When to use Hadoop, HBase, Hive and Pig?
...milar to SQL to query Hive contents which results in a Map Reduce job. Not ideal for fast, transactional systems.
share
|
improve this answer
|
follow
|
...
JdbcTemplate queryForInt/Long is deprecated in Spring 3.2.2. What should it be replaced by?
...urned. Now why you would use this in a query that returns null, I have no idea (this is basically due to n00bs doing it, which they will), but taking these away is not a great move IMO.
– MetroidFan2002
Dec 6 '13 at 16:20
...
node and Error: EMFILE, too many open files
...es to the queue.
Note: If you have to open many files, it would be a good idea to store which files are currently open and don't reopen them infinitely.
const fs = require('fs')
const async = require("async")
var q = async.queue(function(task, callback) {
console.log(task.filename);
fs.re...
What's the difference between a proxy server and a reverse proxy server? [closed]
...of accessibility, I will limit my discussion to web proxies - however, the idea of a proxy is not limited to websites.
FORWARD proxy
Most discussion of web proxies refers to the type of proxy known as a "forward proxy."
The proxy event, in this case, is that the "forward proxy" retrieves data fro...
What exactly do the Vagrant commands do?
... case all changes you made when inside it will be lost. But thats the cool idea that you can start from a base predefined state when you create a new VM.
I really like using it and have blogged about it.
In summary, it is a good wrapper over VirtualBox APIs and Commands. You can have a look at th...
REST HTTP status codes for failed validation or invalid duplicate
...ere ("SHOULD/SHOULD NOT" are RFC 2119 keywords, not emphasis); that's your idea what "forbidden" means, not RFC's.
– Piskvor left the building
Jul 20 '10 at 14:53
...
Reading file contents on the client-side in javascript in various browsers
...ch or a proposal for inclusion to HTML 5 does mean some work defending the idea, but the fact that Firefox already implements it gives you something to start with.
share
|
improve this answer
...
JavaScript: Is there a way to get Chrome to break on all errors?
... Somehow, I don't get the debugger to break on that error. Do you have any idea of why this wouldn't work with Chrome (it does with Firebug when enabling "break on all errors").
– avernet
Feb 14 '10 at 3:18
...
How to obtain the start time and end time of a day?
...obtain end of a day, but rather compare to "before start of next day". His idea is known as the "Half-Open" approach where a span of time has a beginning that is inclusive while the ending is exclusive.
The current date-time frameworks of Java (java.util.Date/Calendar and Joda-Time) both use millis...
Looking to understand the iOS UIViewController lifecycle
...oading of external data from an API.
ViewWillDisappear/DidDisappear - Same idea as ViewWillAppear/ViewDidAppear.
ViewDidUnload/ViewDidDispose - In Objective-C, this is where you do your clean-up and release of stuff, but this is handled automatically so not much you really need to do here.
...