What is the instanceof operator in JavaScript?
I saw this in a blog post by John Resig, and didn't understand what does it means in regular JavaScript code (without that library).
What does the notwithstanding keyword mean in Google Go?
For background, see http://www.libertatia.org/blog/?p=247, which was linked from Reddit | Programming.
Can someone please explain what the "partition by" keyword does and give a simple example of it in action, as well as why one would want to use it? I have a SQL query written by someone else and I'm trying to figure out what it does.
An example of partition by:
SELECT empno, deptno, COUNT(*)
OVER (PARTITION BY deptno) DEPT_COUNT
FROM emp
The examples I've seen online seem a bit too in-depth.
Thanks in advance!
To check if an object is of a certain class one can write:
if (item is Class)
why isn't the opposite possible?
if (item isnt Class)
instead one would write
if (!(item is Class)
which isn't as easy to read as if "isnt" was a keyword just as "is" is.
Is there something that makes it so that only "is" should be available or has "isnt" just been forgotten about?
I have a query that prints userid in label1 when username is entered.Works fine; but i want to write query for username and password that prints userid. so how can i write it? i tried writing using 'and' operator but dont seems to work.
int id = (from auser in lq.logins
where auser.username == userNameString //&& auser.Password =pwdString
select auser.userid).SingleOrDefault();
label1.Text = id.ToString();
Thanks
Ani
I want to add a Custom rule for avoiding the '==' operator inside a method in a class.
For example in the below method i need to avoid 'str1==str2' with string.Compare(str1, str2,StringComparison.Ordinal);.So I need to check this types of code are appear in any of the method
public void StringTest2()
{
string str1 = "Hello";
string str2 = "HELLO";
if (str1 == str2)
{
}
}
Usual method of applying mathematics to variables is
a * b
Is it able to calculate and manipulate two operands like this?
a = input('enter a value')
b = input('enter a value')
op = raw_input('enter a operand')
then how do i connect op and two variables a and b?? i know i can compare op to +, -, %, $ and then assign and compute....
but can i do something like a op b ,
how to tell compiler that op is an operator?? any tweaks possible?
I recently encountered with this question: How to reduce this expression: s73?61:60;.
The hint given was that Instead of using conditional operator we could use a simple comparison which will work fine.
I am not sure but I think it is possible with some GCC extension,although I am unable to figure it out myself.
EDIT:The whole expression is this : s-=s73?61:60
Which method is faster or more responsive in javascript, if/else or the ternary operator? Is it preferred to use one or the other and if so, for what reasons?
Hi
I would like to run cron job on GAE and using python
In the cron.yaml, how do i insert the "url" field if consist of some "get" info
The:
url?keyword=abc
give me error when deploy
i need to use the like operator in a linq query
for this:
timb = time.Timbratures.Include("Anagrafica_Dipendente")
.Where(p => p.Anagrafica_Dipendente.Cognome + " " + p.Anagrafica_Dipendente.Nome like "%ci%");
How can i do?
I have dom table
select * from dom
dom table details:
id name skills
1 dom c,c++
here i want to retrive query using like operator
select * from dom where skills like '%c,c++%'
then i got the desired result.....thats not a problem
suppose if i want to use the belove query
select * from dom where skills like '%C++,C%' i didnt get result
So i have to show details even if i search reverse order in database
how can i?
Hello all
Can you recommend me on places where i can read and see examples on usage of Lambda operator in c# .
I will really like to see a lot examples on it...
Thanks.
What is your opinion of using the infix operator hack in production code? Issues:
The effect this will have on speed.
The potential for a clashes with an object with these operators already defined. This seems particularly dangerous with generic code that is intended to handle objects of any type.
It is a shame that this isn't built in - it really does improve readability
I need to display a piece of HTML only if a variable value appears in a list. I know that Django 1.2 has an 'in' operator. But I am working on a Google App Engine app. Is there a workaround I can use?
Are there some drawbacks of such implementation of copy-constructor?
Foo::Foo(const Foo& i_foo)
{
*this = i_foo;
}
As I remember, it was recommend in some book to call copy constructor from assignment operator and use well-known swap trick, but I don't remember, why...
I just installed MSVS2010 Ultimate & I've noticed something which is somewhat annoying & conflicting with my syntax highlighting, as can be seen:
As can be seen, when a keyword/function/variable/etc is highlighted all other instances of the aforementioned are highlighted too. This is somewhat annoying.
Is there any way to disable this?
As we use "default" keyword as a access specifier, and it can be used in switch statements as well with complete different purpose, So i was curious that is there any other keywords in java which can be used in more then one purposes
As we use "default" keyword as a access specifier, and it can be used in switch statements as well with complete different purpose, So i was curious that is there any other keywords in java which can be used in more then one purposes
I want to find the greater of two numbers without using < > this relational operator.
I tried this
int a,b;
if(a/b==0)
{
b is greater
}
else
{
a is greater
}
but this not working for negative numbers.
I am trying to query the google datastore for something like (with pm -- persistanceManager):
String filters = "( field == 'value' || field == 'anotherValue' )";
Query query = pm.newQuery(myType.class, filters);
When I execute - I am getting back: App Engine datastore does not support operator OR.
What's the best approach in people experience for this kind of queries?
Any help appreciated!
Would you explain, please, what are practical usings of "internal" keyword in C#? I know what "internal" modifier limits access to the current assembly. But when could I need it?
Thanks!