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C# Lazy Loaded Automatic Properties
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@AbleArcher Pointing out a new language feature is a pitch now?
– Alexander Derck
Sep 26 '18 at 21:29
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MVC 5 Seed Users and Roles
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I literally copied and pasted this code into my Seed method in a new mvc 5 web application, and then ran "update-database" in the package manager console. It adds the role (I can see it in AspNetRoles table), but when it comes to the line manager.AddToRole(user.Id...
Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
...my_func($arr);
var_dump($arr);
It'll give this output :
array
0 => int 10
1 => int 20
Which indicates the function has not modified the "outside" array that was passed as a parameter : it's passed as a copy, and not a reference.
If you want it passed by reference, you'll have to modi...
Format file size as MB, GB, etc [duplicate]
... final String[] units = new String[] { "B", "kB", "MB", "GB", "TB" };
int digitGroups = (int) (Math.log10(size)/Math.log10(1024));
return new DecimalFormat("#,##0.#").format(size/Math.pow(1024, digitGroups)) + " " + units[digitGroups];
}
This will work up to 1000 TB.... and the program is...
Is it possible to iterate through JSONArray? [duplicate]
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Not with an iterator.
For org.json.JSONArray, you can do:
for (int i = 0; i < arr.length(); i++) {
arr.getJSONObject(i);
}
For javax.json.JsonArray, you can do:
for (int i = 0; i < arr.size(); i++) {
arr.getJsonObject(i);
}
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Declare a block method parameter without using a typedef
...eter in Objective-C without using a typedef? It must be, like function pointers, but I can't hit on the winning syntax without using an intermediate typedef:
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What is the difference between @PathParam and @QueryParam
... @Path("/query")
public Response getUsers(
@QueryParam("from") int from){
}}
To achieve the same using Spring, you can use
@PathVariable(Spring) == @PathParam(Jersey, JAX-RS),
@RequestParam(Spring) == @QueryParam(Jersey, JAX-RS)
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How to add not null constraint to existing column in MySQL
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Just use an ALTER TABLE... MODIFY... query and add NOT NULL into your existing column definition. For example:
ALTER TABLE Person MODIFY P_Id INT(11) NOT NULL;
A word of caution: you need to specify the full column definition again when using a MODIFY query. If your column has, for...
Extracting double-digit months and days from a Python date [duplicate]
...In [2]: d = datetime.date.today()
In [3]: type(d.month)
Out[3]: <type 'int'>
In [4]: type(d.day)
Out[4]: <type 'int'>
Both are integers. So there is no automatic way to do what you want. So in the narrow sense, the answer to your question is no.
If you want leading zeroes, you'll h...
scoped_ptr 与 auto_ptr 与 shared_ptr 区别总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
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}
~Foo()
{
std::cout<<"destroy Foo()"<<std::endl;
}
void print()
{
std::cout<<"Foo::print"<<std::endl;
}
int i;
};
void OutSharePtr(shared_ptr<Foo> &P)
{
Foo* p = new Foo();
shared_ptr<Foo> sp1(p);
std::cout<<sp1.use_count()<<"::"<<sp1.get()<<std::endl;
shared...