Consider this function declaration:
int IndexOf(const char *, char);
where char * is a string and char the character to find within the string (returns -1 if the char is not found, otherwise its position). Does it make sense to make the char also const? I always try to use const on pointer parameters but when something is called by value, I normally leave the const away.
What are your thoughts?
I want to calculate the quarter Hour from the given two datetimes:
Suppose datetime1 and datetime2 , i am doing somewhat like this :
int d = datetime2.Subtract(datetime1).Hours;
double l = Math.Round(Convert.ToDouble(d/4));
but if the QuarterHour is 3 (ie d=3), whats the good way to show the output- should it be zero or the round one :
3/4 = 0.75. so should i round up to 1 or 0 is ok.
And if round up to 1..how should i?
Hi
I have a table with the following structure:
id int(11),
name varchar(250)
I have lots of records in the table but when I am trying to find a particluar record which has the following value on the name field:
Lorem ipsum d\'olor sit amet
The query is simply returning a blank recordset. I am not being able to figure out this weird behaviour, when my query is as simple as follows:
SELECT * FROM slot_games WHERE name='Lorem ipsum d\'olor sit amet'
Would appreciate your help please! Thanks in advance.
I'm trying to have method void run( string method ) which would run method in that class. For example:
class Foo {
public:
void run( string method ) {
// this method calls method *method* from this class
}
void bar() {
printf( "Function bar\n" );
}
void foo2() {
printf( "Function foo2\n" );
}
}
Foo foo;
int main( void ) {
foo.run( "bar" );
foo.run( "foo2" );
}
this would print:
Function bar
Function foo2
Thanks! :)
I am trying to subtract one variable from another, and use that output. but when I subtract them, the outcome is just the second variable negative!
int distance = pointX-pointXTwo;
NSLog(@"%d", distance);
How can I write a recursive search that I avoid cycles.
My class is this:
class Component(var name: String, var number: Int, var subComponent: Set[Component])
Now I need a way to check whether a component is contained within its subcomponent or between subcomponent of its subcomponent and so on.Avoiding possible cycles caused by other Component.
My method of recursive search must have the following signature,
where subC is the Set [component] of comp.
def content (comp: Component, subC: Set[Component]) : Boolean = {
}
Thanks for the help.
Consider the follwoing fragment:
int a,b;
a = 1;
b = 2;
c = a++++b; // does not work!! Compilation error.
c = a++*+b; // works !!
Please help me understand this behaviour.
I have created an array of coordinates. The centre of an image should move through those coordinates. I have used TranslateAnimation to achieve it. But during the animation the image is moving within the last two coordinates.
Below is my code:
private void CreateAnimationAndRun() {
// move to the different coordinates one by one
for(int k=0; k
The above function is called on a button click.
At some places in my code, I print debug messages like this:
int ret = getLinkSpeed(device.getSysName(), linkSpeed);
if (ret < 0)
{
logDebug("Failed to obtain port speed for this device. Error: " + std::string(strerror(errno)));
}
From the documentation it is not entirely clear if strerror will return 0 under certain conditions (which would cause my code to crash). Does anyone know if it's safe?
Hi, This is a simple question:
I have 2 different view controllers, and each one has its own data stored in its .m file.
I want to take a value, for instance, an integer value (int i=3;) that is declared in ViewController1 and pass it to ViewController2, so I will be able to use that value in the second view controller.
Can anyone please tell me how to do it?
Thanks in advance,
Sagiftw
Is there any hack I could use to do this:
template <class TYPE>
class Hello
{
TYPE _var;
};
I would like a way to store
Hello<int> intHello and Hello<char*> charHello
into the same Container such as a Queue / List.
Hi all,
in C++, when you define a function which takes one argument, you have to define the data type of that variable:
void makeProccess(int request)
However, I want to implement a function which takes different data types rather taking statically defined integer type.
void makeProccess(anyType request)
How can I design a proccess like this, any idea?
Thanks.
for (int i = 0; i < X; i++)
myitem = (checkedDB) ? dirtyItem : cleanItem;
I wanted to know if there's a way of flipping checkedDB in the same statement, i.e. the next iteration checkedDB is the opposite of it's value, so like XORing.
Hi
How do I change my code so that it lists the elements in alphabetical order from a to z. Right now it's ordering from z to a. I can't figure it out and am stuck :-/
String sName1 = ((Address)o).getSurname().toLowerCase();
String sName2 = (this.surname).toLowerCase();
int result = (sName1).compareTo(sName2);
return result;
Thanks :)
How do I randomly select a value for an enum type in C++?
I would like to do something like this.
enum my_type(A,B,C,D,E,F,G,h,J,V);
my_type test(rand() % 10);
But this is illegal... there is not an implicit conversion from int to an enum type.
I stumbled upon this while doing a review and the author is not available:
int n = Convert.ToInt32(text);
if (((n > 0) || (n < 0)) || (n == 0))
{
return 1;
}
The code in general looks solid and it's hard for me to believe that the only purpose of this snippet is to confuse reviewers, but I don't see a way for this condition to fail. Am I missing something?
When would you ever want to scope a String Builder inside a for loop?
Sample Code:
....
for (int i=0; i<cnt; i++) {
....
{
StringBuilder sb = new StringBuilder();
sb.append(",");
....
}
}
....
Hello,
I have a strange problem which I can't fix:
A field:
private boolean[][][] gaps;
Constructor (1st line):
gaps = new boolean[NOBARRICADES][WIDTH][HEIGHT];
Constructor (2nd line):
for (int i = 0; i < NOBARRICADES; i++) {
JAVA throws an error for the 2nd line, saying:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
Does it have anything to do with JAVA syntax (the mistake is in these lines of code) or I should look for the problem somewhere else?
Hi there
In a given binding is it possible to specify the path on the source object? Seems like this could a void a lot of trivial converters..
Imagine this..:
class foo
{
bool A
int B
}
<ComboBox ItemsSource="ListOfFoos" SelectedItem="{Binding number, SourcePath=B}" />
I have a wcf restful service with a operation contract that contains two values - an int and a string. This is a post call as well.
If i wrap the call using the BodyStyle = WebMessageBodyStyle.Wrapped. What should i assume the xml request will now look like?