大约有 45,000 项符合查询结果（耗时：0.0630秒） [XML]
When to use MyISAM and InnoDB? [duplicate]
...resources. -- Mostly no longer true.
Full-text indexing. -- InnoDB has it now
Especially good for read-intensive (select) tables. -- Mostly no longer true.
Disk footprint is 2x-3x less than InnoDB's. -- As of Version 5.7, this is perhaps the only real advantage of MyISAM.
InnoDB:
The InnoDB st...
Non-static variable cannot be referenced from a static context
... class and an instance of that class. If you see a car on the street, you know immediately that it's a car even if you can't see which model or type. This is because you compare what you see with the class "car". The class contains which is similar to all cars. Think of it as a template or an idea.
...
How do I parse JSON with Objective-C?
...f the OS X v10.7 and iOS 5 launches, probably the first thing to recommend now is NSJSONSerialization, Apple's supplied JSON parser. Use third-party options only as a fallback if you find that class unavailable at runtime.
So, for example:
NSData *returnedData = ...JSON data, probably from a web r...
List or IList [closed]
...ays writeable and thus always keeps its promises. Also, since .NET 4.6, we now have IReadOnlyCollection<T> and IReadOnlyList<T> which are almost always better fits than IList<T>. And they are covariant. Avoid IList<T>!
– ZunTzu
Nov 10 '1...
How to write a bash script that takes optional input arguments?
...
you need write to a regular variable to use the substitution
#!/bin/bash
NOW=$1
echo ${NOW:-$(date +"%Y-%m-%d")}
share
|
improve this answer
|
follow
|
...
Add new attribute (element) to JSON object using JavaScript
... @shanehoban here a is JSON, a.s as just defined by you is a string. Now you are trying to add ["subproperty"] to a string. Do you understand now why u got the error?
– shivam
Jul 12 '14 at 11:45
...
Enterprise app deployment doesn't work on iOS 7.1
..., like https://dl.dropboxusercontent.com/s/gnoctp7n9g0l3hx/download.html
Now, visit https://dl.dropboxusercontent.com/s/gnoctp7n9g0l3hx/download.html in your device, you can install the app like before.
WHAT A WONDERFUL WORLD！
...
What causes imported Maven project in Eclipse to use Java 1.5 instead of Java 1.6 by default and how
...
@LIttleAncientForestKami verified with 3.7.0, by now the values are set as constants DEFAULT_SOURCE and DEFAULT_TARGET, but still both set to 1.5.
– Adam Burley
Dec 17 '17 at 12:40
...
You have already activated X, but your Gemfile requires Y
...is.
Basically what's happening is that you've updated rake to 0.9.2 which now conflicts with the version specified in your Gemfile. Previously the latest version of rake you had matched the version in your Gemfile, so you didn't get any warning when simply using rake.
Yehuda Katz (one of the origi...
Locate current file in IntelliJ
...
In the keymap it's called "Select in..." now.
– seanmcl
Oct 13 '14 at 15:02
3
...