Is there anything called ExecuteNonScalar ? in any of the programming language.
No. But there is ExecuteNonQuery, and ExecuteScalar.
Well there is a method called "ExecuteScalar" in .NET. It basically returns the first column of first resultant row.
For more info and example you may check this: link
Related
I need to use a few of the VideoCapture::set() options for openCV. They are here;
http://docs.opencv.org/modules/highgui/doc/reading_and_writing_images_and_video.html#videocapture-set
But I cannot find anywhere something that specifies the range of values that can be used to give each parameter a value.
Can someone help?
That information is really missing, and with some of them you really need to take a hit & miss approach.
For the time being, you can check the return of VideoCapture::set() to see if the method succeeded in setting that parameter.
I'd like to shorten code like the following:
content = content.join("\n") if content.respond_to? :join
into this:
content.try!(:join, "\n")
Is this a good idea, and can it be implemented in terms of the existing Object.try?
If I understand correctly, you want a version of try that modifies the object in-place, as in the difference between x = x.reverse and x.reverse!
To answer your questions...
Is this a good idea
No, it's not, it's actually impossible.
Can it be implemented in terms o the existing Object.try?
No, it can't, either with or without Object.try, it cannot be implemented at all. You cannot change an object's type in-place.
Using .join on an array produces a string. You cannot change an array in-place to become a string. This is why there is no join! method in the first place. Many of the methods on Array and Enumerable have versions with and without !. Many other methods do not have a ! version. This is because the ! version cannot be implemented.
In general, if you have a method like reverse and it's in-place equivalent reverse! you can already use try just fine:
content.try(:reverse!)
If the ! method doesn't already exist, such as join and the non-existent join!, it's because it cannot work, and you cannot make it work with a hypothetical try!.
Note that you can make something like this work with a proxy object, but this is a horrible overwrought solution to a nonexistent problem.
Just use content = content.join("\n") if content and be done with it.
Simple question, new to iOS and Objective-C, not understand why it's not doing the full link.
NSLog(#"http://iam.colum.edu/portfolio/api/course/%#", setCourseNumber, "?json=True");
output: http://iam.colum.edu/portfolio/api/course/32-2400
Not going to go into what the coursenumber is, no point, the question is that my output is not including the "?json=True" part of the link. I know it must be something small that I am not including, I just am new to Objective-C and can't figure it out. Thank you in advance.
This:
NSLog(#"http://iam.colum.edu/portfolio/api/course/%#", setCourseNumber, "?json=True");
Could be this:
NSLog(#"http://iam.colum.edu/portfolio/api/course/%#?json=True", setCourseNumber);
Looks like Logan beat me too it.
Here's some more information from Apple's documentation on formatting string objects.
Here's a list of string formats. Things like %#, %d, etc.
Because you have two arguments, but using only one:
NSLog(#"http://iam.colum.edu/portfolio/api/course/%#", setCourseNumber, "?json=True");
setCourseNumber is first attribute - %#
"?json=True" is second attribute - ?
So you can modify it like this:
NSLog(#"http://iam.colum.edu/portfolio/api/course/%#%#", setCourseNumber, "?json=True")
Or use
NSLog(#"http://iam.colum.edu/portfolio/api/course/%#?json=True", setCourseNumber)
No matter, where argument is situated - in the middle or in the end.
i found one method ImageFigure() in draw2d. So i want to know is it presnt in graphiti.js also. If it present in graphiti then it solves my problem on grouping object.
Thanks In advance.
ImageShape or ImageFigure is not part of the current graphiti version. Graphiti tries to implement almost all functions/object from Draw2D......but it requires some time.
I want to find out whether a variable is an array or not
if (params.writtenLines == ???)
Much appreciated.
More importantly, why do you want to check whether it's an array? If you know the parameter might be a single string or a list, you can now use:
def lines = params.list("writtenLines")
That came with Grails 1.2.
This functionality is already available in pure Java and can therefore be used in Groovy, too:
if (params.writtenLines.class.isArray())
I realize this is a bit late, but what about this:
List.isCase(params.writtenLines)
Wouldn't it be a correct solution, too?