大约有 36,010 项符合查询结果（耗时：0.0664秒） [XML]
How can I determine if a variable is 'undefined' or 'null'?
How do I determine if variable is undefined or null ?
30 Answers
30
...
What are the benefits of Java's types erasure?
...ct a perspective that is not interested in whether we can make the machine do something, but more whether we can reason that the machine will do something we actually want. Good reasoning is a proof. Proofs can be specified in formal notation or something less formal. Regardless of the specificat...
NodeJS: How to get the server's port?
...
Express 4.x answer:
Express 4.x (per Tien Do's answer below), now treats app.listen() as an asynchronous operation, so listener.address() will only return data inside of app.listen()'s callback:
var app = require('express')();
var listener = app.listen(8888, functi...
Parsing Visual Studio Solution files
...tionParser
//Assembly: Microsoft.Build, Version=4.0.0.0
static readonly Type s_SolutionParser;
static readonly PropertyInfo s_SolutionParser_solutionReader;
static readonly MethodInfo s_SolutionParser_parseSolution;
static readonly PropertyInfo s_SolutionParser_projects;
st...
How do I debug error ECONNRESET in Node.js?
...ication using Socket.io for a chat webapp
and I get the following error randomly around 5 times during 24h.
The node process is wrapped in forever and it restarts itself immediately.
...
Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
...ples from books, magazine articles, or another code base, and these people don't learn new syntax abstractly. Some people pattern-match, and some people learn by rote.
I am gradually seeing people using SQL-92 syntax more frequently than I used to, though. I've been answering SQL questions online...
How to dynamically insert a tag via jQuery after page load?
...ipt tags as strings and then using jquery replaceWith() to add them to the document after page load:
9 Answers
...
How much is the overhead of smart pointers compared to normal pointers in C++?
...
unique_ptr has no overhead in the destructor. It does exactly the same as you would with a raw pointer.
– R. Martinho Fernandes
Dec 15 '14 at 11:22
...
How to do a LIKE query in Arel and Rails?
I want to do something like:
3 Answers
3
...
How do I get rid of this unwanted bar from Eclipse?
...cidentally hit a combination of keys which made this bar appear when I was doing some shortcuts. This question has probably being answered before but since I don't know the exact name of the bar googling the problem has being fruitless. I've spent two hours trying to fix it. So anyone know how to ge...