大约有 4,400 项符合查询结果(耗时:0.0156秒) [XML]
Can a local variable's memory be accessed outside its scope?
...w can it be? Isn't the memory of a local variable inaccessible outside its function?
You rent a hotel room. You put a book in the top drawer of the bedside table and go to sleep. You check out the next morning, but "forget" to give back your key. You steal the key!
A week later, you return to th...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...y wiki
24 revs, 13 users 26%Rizier123
8
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How to pass json POST data to Web API method as an object?
...structure of our view model class
var model = {
Name: "Shyju",
Id: 123,
Tags: [{ Id: 12, Code: "C" }, { Id: 33, Code: "Swift" }]
};
$.ajax({
type: "POST",
data: JSON.stringify(model),
url: "../product/save",
contentType: "application/json"
}).done(function(res) {
...
How can I get the current date and time in UTC or GMT in Java?
...
Behrang, according to stackoverflow.com/questions/4123534/…, the MySQL JDBC driver converts a given java.util.Timestamp (or java.util.Date) to the server time zone.
– Derek Mahar
Dec 7 '10 at 21:02
...
Best practices for circular shift (rotate) operations in C++
...a rotate-right. (This optimizes away with compile-time-constant counts.)
Fun fact: ARM doesn't really have dedicated shift/rotate instructions, it's just MOV with the source operand going through the barrel-shifter in ROR mode: mov r0, r0, ror r1. So a rotate can fold into a register-source opera...
What Git branching models work for you?
...s necessary or not?!)": not always necessary, but it help keeping trace of functional dependencies (stackoverflow.com/questions/881092/…) and semantic conflicts (stackoverflow.com/questions/2514502/…)
– VonC
Apr 12 '10 at 13:39
...
What is the most efficient way to deep clone an object in JavaScript?
...e(JSON.stringify(object))
const a = {
string: 'string',
number: 123,
bool: false,
nul: null,
date: new Date(), // stringified
undef: undefined, // lost
inf: Infinity, // forced to 'null'
re: /.*/, // lost
}
console.log(a);
console.log(typeof a.date); // Date obje...
Create code first, many to many, with additional fields in association table
...g will fetch the comments automatically behind the scenes.
Edit
Just for fun a few examples more how to add entities and relationships and how to delete them in this model:
1) Create one member and two comments of this member:
var member1 = new Member { FirstName = "Pete" };
var comment1 = new C...
Turn a simple socket into an SSL socket
...in(int argc, char *argv[])
{
BreakermindSslServer boom;
boom.Start(123,"/home/user/c++/qt/BreakermindServer/certificate.crt", "/home/user/c++/qt/BreakermindServer/private.key");
return 0;
}
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...
Flask-SQLalchemy update a row's information
...t()
pprint(bob.data) # {}
# Modifying data is ignored.
bob.data['foo'] = 123
db.session.commit()
bob = User.query.filter_by(name='Bob').first()
pprint(bob.data) # {}
# Replacing data is respected.
bob.data = {'bar': 321}
db.session.commit()
bob = User.query.filter_by(name='Bob').first()
pprint(b...
