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Using generic std::function objects with member functions in one class
...;
// Call with late supplied 'this'
MyClass myInst;
callable(&myInst, 123);
What would the storage type look like without auto?
Something like this:
std::_Mem_fn_wrap<void,void (__cdecl TestA::*)(int),TestA,int> callable
You can also pass this function storage to a standard function ...
Flask-SQLAlchemy how to delete all rows in a single table
...e query.
ex.
#for specific value
db.session.query(Model).filter(Model.id==123).delete()
db.session.commit()
Delete Single Record by Object
record_obj = db.session.query(Model).filter(Model.id==123).first()
db.session.delete(record_obj)
db.session.commit()
https://flask-sqlalchemy.palletsprojec...
grepping using the “|” alternative operator
...overflow.com/a/6775943/3933332 doesn't have?
– Rizier123
Mar 1 '15 at 5:35
3
@Rizier123 -- look a...
Why can't C# interfaces contain fields?
...
How can I define a constant default value (like 123) to that automatic implementation of Year?
– lama12345
Aug 1 '17 at 1:39
1
...
Load “Vanilla” Javascript Libraries into Node.js
...
David WoleverDavid Wolever
123k7676 gold badges297297 silver badges462462 bronze badges
...
What is the parameter “next” used for in Express?
...) {
// check for and maybe do something with req.user
});
Since /users/123 will match the route in your example first, that will first check and find user 123; then /users can do something with the result of that.
Route middleware is a more flexible and powerful tool, though, in my opinion, sin...
Is there any particular difference between intval and casting to int - `(int) X`?
...ould be used as a second parameter (base 10 by default) :
var_dump((int)"0123", intval("0123"), intval("0123", 8));
will get you :
int 123
int 123
int 83
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|
...
What does %~dp0 mean, and how does it work?
...~dp1= D:\Workbench\
~dp2= D:\Workbench\
Run 2:
D:\Workbench>batch c:\123\a.exe e:\abc\b.exe
~dp0= D:\Workbench\
~dp1= c:\123\
~dp2= e:\abc\
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...
How do I get the current time only in JavaScript
... gvlasov
13.5k1717 gold badges5858 silver badges9898 bronze badges
answered Feb 4 '15 at 16:16
Fernando GomesFernando Gomes
98...
Why do I get TypeError: can't multiply sequence by non-int of type 'float'?
...2
beta=1-alpha
C = (-math.log(1-beta))/alpha
coff = [0.0,0.01,0.0,0.35,0.98,0.001,0.0]
coff *= C
The error:
coff *= C
TypeError: can't multiply sequence by non-int of type 'float'
The solution - convert the list to numpy array:
coff = np.asarray(coff) * C
...