大约有 5,500 项符合查询结果（耗时：0.0265秒） [XML]
What is NoSQL, how does it work, and what benefits does it provide? [closed]
...of joins is very hard on "traditional" RDBMSs) - could well be a factor of 1000 in extreme cases.
Is the technology too new to start implementing yet or is it worth taking a look into?
Depends mainly on what you're trying to achieve. It's certainly mature enough to use. But few applications really ...
Are global variables bad? [closed]
...
If someone's passing around 100 variables, then they've not learnt what an object is. Using the reference to this object is then at worst passing around a pointer. I'd say that the rule isn't just clarity, but testability too - and using a non-global ...
Click button copy to clipboard using jQuery
...");
document.body.removeChild(aux);
}
#target {
width:400px;
height:100px;
border:1px solid #ccc;
}
<p id="demo"><b>Bold text</b> and <u>underlined text</u>.</p>
<button onclick="copy('demo')">Copy Keeping Format</button>
<div id="target...
String, StringBuffer, and StringBuilder
... "yrs. old too")
.toString()
Or
String s = new StringBuilder(100).appe..... etc. ...
// The difference is a size of 100 will be allocated upfront as fuzzy lollipop points out.
StringBuffer ( the syntax is exactly as with StringBuilder, the effects differ )
About
StringBuffer vs....
Creating an index on a table variable
...ate index after insert.
CREATE TABLE #Table(C1 int,
C2 NVarchar(100) , C3 varchar(100)
UNIQUE CLUSTERED (c1)
);
Create table with unique clustered index
Insert data into Temp "#Table" table
Create non clustered indexes.
CREATE NONCLUSTERED INDEX IX1 ON #Table (C2,C3);
...
Database design for audit logging
...IMARY KEY,
Name nvarchar(200) NOT NULL,
CreatedByName nvarchar(100) NOT NULL,
CurrentRevision int NOT NULL,
CreatedDateTime datetime NOT NULL
And the contents:
CREATE TABLE dbo.PageContent(
PageID int NOT NULL,
Revision int NOT NULL,
Title nvarchar(200) NOT NULL,...
Zoom in on a point (using scale and translate)
...lack square.
context.fillStyle = "black";
context.fillRect(50,50,100,100);
}
// Draw loop at 60FPS.
setInterval(draw, 1000/60);
canvas.onwheel = function (event){
event.preventDefault();
// Get mouse offset.
var mousex = event.clientX - canvas.offsetLeft;
var mous...
How many socket connections can a web server handle?
...oday, I was worried whether IIS with ASP.NET would support in the order of 100 concurrent connections (look at my update, expect ~10k responses per second on older ASP.Net Mono versions). When I saw this question/answers, I couldn't resist answering myself, many answers to the question here are comp...
Choice between vector::resize() and vector::reserve()
... the only effect.
So it depends on what you want. If you want an array of 1000 default items, use resize(). If you want an array to which you expect to insert 1000 items and want to avoid a couple of allocations, use reserve().
EDIT: Blastfurnace's comment made me read the question again and reali...
What is the motivation for bringing Symbols to ES6?
...
100
Symbols do not guarantee true privacy but can be used to separate public and internal properti...