Tutorial Objective-C Programming Guide

This is the part of a series of tutorials on Programming in Objective-C. Its not about iOS development though that will come with time. Initially, though, these tutorials will teach the Objective-C language. You can run them using ideone.com. Eventually, well want to go a bit further than this, compiling and testing Objective-C on Windows and Im looking at GNUStep or using Xcode on Macx. Want to learn C Programming? Try our free C Programming Tutorials Before we can learn to write code for the iPhone, we really need to learn the Objective-C language. Although Id written a developing for iPhone tutorial before, I realized that the language could be a stumbling block. Also, memory management and compiler technology have changed dramatically since iOS 5, so this is a restart. To C or C developers, Objective-C can look quite odd with its message sending syntax [likethis] so, a grounding in a few tutorials on the language will get us moving in the right direction. What Is Objective-C? Developed over 30 years ago, Objective-C was backwards compatible with C but incorporated elements of the programming language Smalltalk. In 1988 Steve Jobs founded NeXT and they licensed Objective-C. NeXT was acquired by Apple in 1996 and it was used to build the Mac OS X Operating System and eventually iOS on iPhones and iPads. Objective-C is a thin layer on top of C and retains backward compatibility such that Objective-C compilers can compile C programs. Installing GNUStep on Windows These instructions came from this StackOverflow post. They explain how to install GNUStep for Windows. GNUStep is a MinGW derivative that lets you install a free and open version of the Cocoa APIs and tools on many platforms. These instructions are for Windows and will let you compile Objective-C programs and run them under Windows. From the Windows Installer page,  go to the FTP site or HTTP Access and download the latest version of the three GNUStep installers for the MSYS System, Core, and Devel. I downloaded gnustep-msys-system-0.30.0-setup.exe, gnustep-core-0.31.0-setup.exe and gnustep-devel-1.4.0-setup.exe. I then installed them in that order, system, core and devel. Having installed those, I ran a command line by clicking start, then clicking run and typing cmd and pressing enter. Type gcc -v and you should see several lines of text about the compiler ending in gcc version 4.6.1 (GCC) or similar. If you dont, ie it says File not found then you may have another gcc already installed and need to correct the Path. Type in set at the cmd line and youll see  lots of environment variables. Look for Path and many lines of text which should end in ;C:\GNUstep\bin;C:\GNUstep\GNUstep\System\Tools. If it doesnt, then open the Windows Control Panel look for System and when a Window opens, click Advanced System Settings then click the Environment variables. Scroll down the System Variables list on the Advanced tab until you find Path. Click Edit and select All on the Variable Value and paste it into Wordpad. Now edit the paths so you add the bin folder path then select all and paste it back into the Variable value then close all the windows. Press ok, open a new cmd line and now gcc -v should work. Mac Users You should sign up to the free Apple development programs and then download Xcode. Theres a bit of setting up a Project in that but once its done (Ill cover that in a separate tutorial), you will be able to compile and run Objective-C code. For now, the Ideone.com website provides the easiest method of all for doing that. Whats Different about Objective-C? About the shortest program you can run is this: #import Foundation/Foundation.hint main (int argc, const char *argv[]){  Ã‚  Ã‚  Ã‚  NSLog (Hello World) ;  Ã‚  Ã‚  Ã‚  return (0) ;} You can run this on Ideone.com. The output is (unsurprisingly) Hello World, though it will be sent to stderr as thats what NSLOG does. Some Points #import is the Objective-C equivalent of #include in C.Instead of zero terminated C string, Ive used Objective-Cs strings. These always start with as in Example of a string.The main function is no different. In the next Objective-C tutorial Ill look at objects and OOP in Objective-C. How to do things in C

Antenatal Notes On Prenatal Care - 1247 Words

Antenatal Notes: All appointments and tests made by the health care professionals will be recorded these are known as antenatal notes. The mother should carry her notes with her through-out her pregnancy so that if anything were to happen to her the doctors would have the correct information. The hospital and midwife may have duplicate copies. By 28 weeks, the hospital will expect the mother to have a bed booked for a hospital delivery. Postnatal Care: NCT http://www.nct.org.uk/postnatal-care State that, â€Å"The quality of postnatal care provided to women and families in the first days and weeks after birth can have a significant impact on their experience of the transition to parenthood.† The needs of the mother and her family determine the†¦show more content†¦The ‘baby blues’: Once a baby is born the mother’s hormones will be changing the mother may therefore feel weepy or flat. Baby blues should pass after a few days and is more common in first-time mothers. Post-natal depression (PND): PND usually develops within the first month after the baby’s birth. The mother will show similar symptoms to those seen in ‘ordinary’ depression such as; feeling low, resentful, angry, constantly tired, tense and anxious or feeling unable to cope and suffering with a loss of appetite. There are various treatments for post-natal depression such as; talking about the problem with a health visitor, getting extra support or medication. A short time after the baby is born a post-natal check will be carried out by a hospital doctor the mother will have various checks such as; weight, urine test, blood pressure, perineal check and rubella immunity. When the baby turns six weeks old a check will be carried out at the same time as the mother. The baby’s heart will be listened to, their weight be measure and their general behaviour noted. The mother will be asked about any problems and the information will be recorded on the Personal Child Health Record (PCHR). An example of an extreme nature theorist is Bowlby (1969) and his theory of attachment. Bowlby believed that all mental health and behavioural problems could be linked to early childhood health. Bowlby’s theory suggests that all children

Hunting the Amyloid Protein free essay sample

As I peered down into the circular frame of the microscope, I found myself staring at nothing. Again. My eye ached from squinting. Maybe I wasnt cut out for this sort of thing. Then, as I anxiously fiddled with the black knob, a blurry dot slowly shifted into focus. I had found it: a grayish pinpoint in the center of a cluster of bacteria – the infamous amyloid protein. My mentor, Claire, looked down at me, hunched in my swivel chair, my lab coat wrinkled and stained, hair wildly tangled. â€Å"Good work, Olivia. Whats next?† When I applied for the internship, the Buck Institute of Research sounded impressive in title alone. My biomedical consultant father proudly announced that it was the first independent research facility in the country focused solely on aging and age-related disease. As fascinating as my physiology class was, I found myself aching for scientific exploration beyond the boundaries of Room 182. We will write a custom essay sample on Hunting the Amyloid Protein or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Approaching its entrance, I caught my first glimpse of the Buck Institute, a stark-white structure embedded in a barren cow pasture. As I walked through the asymmetrical modern doors, I was promptly handed a freshly pressed lab coat with my last name stitched into the fabric. I had been assigned to the Alzheimers division, my task, to find the amyloid protein – the sticky deposits associated with Alzheimers. On Monday, I became acquainted with my new friends – the 2 mL, 5 mL, 10 mL, and 25 mL pipettes. Tuesday, it was the sterilized test tubes, the Bunsen burner, the Florence flasks. Wednesday, I confidently mastered the grumbling centrifuge. And by Friday, I had memorized the various methods of replicating frozen bacteria, the building block of cell research. My mentor referred to the procedure as â€Å"the necessary evil.† In order to get to my designated work space in the basement, I was forced to pass the laboratory mice. Every morning, I mentally prepared myself for the reverberations of thousands of mice squealing, squirming, munching. I speculated about the anarchy behind the high cement walls. My nose was also punished; death hung in the static air of the fluorescent-lit hallway. â€Å"We kill about 300 mice a day. Its quite sad, but we need them fresh,† Claire explained. I thought about the mice often. I reluctantly accepted that I could not help them. I spent the following four weeks  ­desperately hunting the amyloid protein. Articles, newspaper clippings, and research notes were piled high on my lab bench. I caught myself daydreaming on multiple occasions, not about boys but of my inevitable encounter with the protein. I was a woman obsessed. At dinner, my brother would roll his eyes when I brought up the various techniques used in cell crystallization. Even my father was beginning to respond to my inquiries about AB toxic secretions with a slight tone of irritation. The more I settled into my quest for the protein, the more doubts I began to have. The mice, the pipettes, the cells, the post doctorates – it seemed like everyone and everything had a future‚ while I did not know mine. I was given a short-term goal of finding the protein, but that was all I had. I dwelled on my imminent future – how would I know what I was supposed to do? I was freed from my self-torment the day I discovered the pesky amyloid protein. â€Å"Whats next?† surprisingly became the most rewarding question I had ever faced. It had taken me four weeks, two days, five hours, and 21 minutes to realize that I was the scientist. The architect, the director, the composer – I was the scientist! I knew from that moment that I had no predetermined protocols to follow. They were mine to create. My educational journey would not be limited to my physiology class – the mouse hair follicles, the patterning grooves of the frontal lobe, or the electrically excitable neurons. The possibilities were infinite. Since conquering the furtive protein, I have felt a bit like Marie Curie. Like her, my passion for science shapes who I am. The future rests in my steady, rubber-gloved hands.