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How do you implement a class in C? [closed]
...n(Object *self);
/// Person.h
typedef struct Person {
Object obj;
char *name;
} Person;
int Person_init(Person *self, char *name);
int Person_greet(Person *self);
int Person_clean(Person *self);
/// Object.c
#include "object.h"
int Object_init(Object *self)
{
self->uuid = uuid_new...
Is JavaScript a pass-by-reference or pass-by-value language?
The primitive types (number, string, etc.) are passed by value, but objects are unknown, because they can be both passed-by-value (in case we consider that a variable holding an object is in fact a reference to the object) and passed-by-reference (when we consider that the variable to the object hol...
What's the best way to check if a String represents an integer in Java?
I normally use the following idiom to check if a String can be converted to an integer.
38 Answers
...
How to enter a multi-line command
...t is preceded by a valid statement:
return
5
will not work.
Finally, strings (in all varieties) may also extend beyond a single line:
'Foo
bar'
They include the line breaks within the string, then.
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jsonify a SQLAlchemy result set in Flask [duplicate]
...alized.
def dump_datetime(value):
"""Deserialize datetime object into string form for JSON processing."""
if value is None:
return None
return [value.strftime("%Y-%m-%d"), value.strftime("%H:%M:%S")]
class Foo(db.Model):
# ... SQLAlchemy defs here..
def __init__(self, ....
Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
...cker's example and use Scala's case classes:
case class Person(firstName: String, lastName: String)
The above Scala class contains all features of the below Java class, and some more - for example it supports pattern matching (which Java doesn't have). Scala 2.8 adds named and default arguments, ...
Why does changing 0.1f to 0 slow down performance by 10x?
...ormance!!!
Denormal (or subnormal) numbers are kind of a hack to get some extra values very close to zero out of the floating point representation. Operations on denormalized floating-point can be tens to hundreds of times slower than on normalized floating-point. This is because many processors ca...
How do I convert a double into a string in C++?
I need to store a double as a string. I know I can use printf if I wanted to display it, but I just want to store it in a string variable so that I can store it in a map later (as the value , not the key ).
...
Mismatched anonymous define() module
... up if
You have an anonymous define ("modules that call define() with no string ID") in its own script tag (I assume actually they mean anywhere in global scope)
You have modules that have conflicting names
You use loader plugins or anonymous modules but don't use require.js's optimizer to bundle ...
What is the difference between Debug and Release in Visual Studio?
....debug), release (web.release). Assume we set debug and release connection string by transformation to the corresponding config (debug and release). When publishing, we can publish according to our selection in the publish dialog. But, when running application, despite I select Debug, it uses releas...