learn objective c on the mac free ebook pdf

... Trang 1The other part of a class’s source is the implementation The @implementation section tells the Objective- C compiler how to make the class actually work This section contains the code that ... leave the code in a messy state Xcode can help here, too Control- click (or right- click) to see the editor’s contextual menu, and then choose Re- indent selection Xcode will go through the selection, ... good news: Objective- C provides a way to limit the effects of dependency- caused recompilations Dependency issues exist because the Objective- C compiler needs certain pieces of information to be

Ngày tải lên: 12/08/2014, 20:22

... the right Control- (period) Cycle through the completions Shift-control- (period) Cycle backward through the completions Control-/ Move to the next completion placeholder Command-control-S Make ... snapshot Control-F Move the cursor forward Control-B Move the cursor backward Control-P Move the cursor to the previous line Control-N Move the cursor to the next line Control-A Move the cursor to the ... beginning of the line Control-E Move the cursor to the end of the line (continued) Trang 6 Table 7-1 (continued)Keystroke Description Control-T Transpose the characters adjacent to the cursor Control-D

Ngày tải lên: 12/08/2014, 20:22

... different ways The first way is [SomeClass new], and the second is [[SomeClass alloc] init] These two techniques are equivalent, but the common Cocoa convention is to use alloc and init rather than ... perform object allocation and initialization in a single operation using a constructor Objective- C splits the two operations into explicit allocation and initialization stages A common beginner’s ... NSString *desc = [someObject description]; NSLog (@"%@", desc); [desc release]; There has got to be a better way And luckily, there is! Everyone into the Pool! Cocoa has the concept of the autorelease

Ngày tải lên: 12/08/2014, 20:22

... CategoryThing After the class declaration come three categories, and each category... NumberConvenience CHAPTER 12: Categories Like the @interface for the category, the @implementation ... the object’s attribute Use the @synthesize directive to tell the compiler to generate the implementation for the accessors You can control which instance variable is affected by the ... to put them The second limitation concerns name collisions, in which one of your category methods has the same name as an existing method When names collide, the category wins Your category

Ngày tải lên: 12/08/2014, 20:22

... is allocated by sending allocWithZone: to the class of the object that’s receiving this message: Car *carCopy; carCopy = [[[self class] allocWithZone: zone] init]; CarParts-copy contains ... graphical Cocoa application using Interface Builder and the AppKit Interface Builder and AppKit are the soul of Cocoa programming and are the central topic of most Cocoa books and projects—and they’re ... 14: Introduction to the AppKit 250 Let’s get started by going to XCode and making a new Cocoa Application project Run XCode; choose New Project from the File menu; select Cocoa Application (as shown

Ngày tải lên: 12/08/2014, 20:22

... attributes We could have made a class method on Car, or made some kind of factory class, but Objective-C is still C, so we can use functions Here, we’re using a function, because it keeps the code for ... of Garage can access and change the name And there’s a method to print out the contents To implement a collection of cars, we’ve got a mutable array behind the scenes The implementation is similarly ... creates an NSKeyedArchiver instance under the hood; it then passes it to the -encodeWithCodermethod of the object thing1 As thing1 encodes its attributes, it can cause other objects to be encoded,

Ngày tải lên: 12/08/2014, 20:22

... in Xcode, 104bsearch(), 137Build and Go button, 7 C [c] decoration, 305.c file extension, 8 C preprocessor, 93C++, 1–2comparing to Objective-C, 309embedding C++ objects into Objective-C objects, ... worlds The GCC compiler that comes with Xcode supports a hybrid language called Objective-C++ This compiler lets you freely mix C++ and Objective-C code, with a couple of small restrictions You can ... you can’t have an Objective-C class inheriting from std::string. You can put pointers to Objective-C objects into C++ objects Since all Objective-C objects are dynamically allocated, you can’t

Ngày tải lên: 12/08/2014, 20:22

... Trang 1CHÀO MỪNG QUÝ THẦY CÔ CÙNG CÁC EM HỌC SINH VỀ DỰ HỘI GIẢNG Trang 2Tuesday, December 12th,2006 Unit 7 : YOUR HOUSE  Section C : ON THE MOVE  Period 44 : C1, C2 Trang 3-bike ... train c.by bus C Nam sometimes goes downtown ……… a.by plane b.by car c.by bus D Nga goes to school ……… a.by bike b.by bus c.by plane Trang 16- Learn the Vocabulary.- Practice the structure ... Trang 9Practice with a partnerEx : How does Mr Ba travel to work ? He travels by motorbike. Trang 10Matching the sentences with the correct pictures : 1 I walk to school. 2 I go to school by

Ngày tải lên: 17/04/2021, 16:11

... Trang 1 KÍNH CHÚC QUÝ THẦY CÔ SỨC KHỎE ! Trang 2 Wednesday, November 18th, 2009 UNIT 7 YOUR HOUSE Section C On the move ( C1,2) Trang 3C 1 Listen.How do you go to school ? motorbik ... Trang 4bus carwalk I walk to school How do you go to school ? I go to school on foot Trang 5Now ask and answer questions about these people Trang 6How does Lien go to school ?Trang 7C 2 Listen.How ... does Lien go to school ?Trang 7C 2 Listen.How does Mr Hai travel to work ? travel Trang 8Practice with a partner :Example: How does Mr Ba travel to work ? He travels by motorbike. Trang 94

Ngày tải lên: 20/04/2021, 11:38

... but they soon came into more general use among such tribes as continued to hold intercourse with Europeans This circumstance gave the Micmacs an undisputed ascendancy over the Trang 4Boeothicks, ... each other, and from the margin of the river on each side there extended for some miles into the country, high fences erected for the purpose of conducting the deer to the river, and along the ... chief declined going any further, and with one of his men took leave, directing the other two to go on with Mr Buchan They did so, until they came near the place to which they were to be conducted,

Ngày tải lên: 22/03/2014, 22:20

... that, among the minimum-cost choices of batch 2 satisfying the first two conditions, there is one that also satisfies the third An exception to the second condition occurs when the fractional jobs ... with frac- tions summing to 1 The batches are constructed succes- sively, starting with batch 1 We now describe the construc- tion of batch 1 Let a;, be the fraction of the Ath light job occurring ... threshold constraints on the amount of money (time) the schedule can consume In the threshold cases the problem is to find the schedule with the maximum expected value subject to the constraint that the

Ngày tải lên: 29/03/2014, 20:20

... consolidation of existing educational precincts of the Campus and the construction of 11 new car parking spaces. An “early works” building package was completed, as part of the project, in April 2001.The ... conference was held on the south coast of NSW and the cover graphics make use of the dramatic local landscape. PIA NSW DIVISION CONFERENCE Wollongong, NSW 14-16 November 2004 Managing change ... maintenance work carried out in various public schools throughout NSW. For further information please contact: Carmel Hong Director Educational North Coast Institute Tel 6659 3012 Steve Easter Project

Ngày tải lên: 31/03/2014, 15:20

... studies, reporting the apparent secondary attack rates varied from 13 to 30% [76] After taking the community infection rate into account, they concluded the actual secondary attack rate among family ... epithelial cells and macrophages increase expression of the antimi-crobial cathelicidin upon exposure to microbes, an expression that is dependent upon the presence of vita-min D Pathogenic microbes, ... Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction

Ngày tải lên: 20/06/2014, 01:20

... Periodicities in Nonlinear Difference Equations, vol 4 of Advances in Discrete Mathematics and Applications, Chapman & Hall/CRC, Boca Raton, Fla, USA, 2005. 10 L Gutnik and S Stevi´c, “On the ... investigate the existence of a prime two periodic solution of the above equation and we find solutions which converge to this periodic solution Copyrightq 2009 C J Schinas et al This is an open access ... S Kulenovi´c and G Ladas, Dynamics of Second Order Rational Difference Equations, Chapman & Hall/CRC, Boca Raton, Fla, USA, 2002 Trang 1116 G Papaschinopoulos and C J Schinas, “On a k 

Ngày tải lên: 21/06/2014, 20:20

... for channel estimation and multiuser detection in code division multiple access (CDMA) systems The conventional methods for extracting the desired infor-mation about the signal and noise subspaces ... achieved by either the eigenvalue decomposition (EVD) of the covariance data matrix or the singular value decomposition (SVD) of the data matrix However, the main drawback of these conventional ... the subspace tracking algorithms add orthonor-malization step to achieve orthonormal eigenvectors [13], Trang 2which increases the computational complexity The neces-sity of orthonormalization

Ngày tải lên: 21/06/2014, 22:20

... cb − λe[bc]
+ cab − λe[ac]b +b ac + ca − λe[ac]
+ cba − λe[bc]a −λ e([ab]c + c[ab] − λe[[ab]c]) + ce[ab]
+ λ2(e[ec][ab]) = abc + acb + cab + bac + bca + cba −λ ae[bc] + e[ac]b + be[ac] + e[bc]a ... λe[a[bc]])
+ λ2(e[ae][bc]) = abc + bac + bca + acb + cab + cba −λ be[ac] + e[ab]c + ce[ab] + e[ac]b + ae[bc] + ea[bc] + e[bc]a
+λ2 ee[a[bc]] + ea[bc]
(a ~ b) ~ c = (ab + ba − λe[ab]) ~ c = a bc ... T(A) Choose a, b, c ∈ T(A), l(a) = l(b) = l(c) = 1: a ~ (b ~ c) = a ~ bc + cb − λe[bc]
= abc + b ac + ca − λe[ac]
− λe[ab]c +acb + c ab + ba − λe[ab]
− λe[ac]b −λ ae[bc] + e(a[bc] + [bc]a −

Ngày tải lên: 07/08/2014, 08:20

... curiosity, encourage concentration, promote participation and have got the chance to analyse content carefully before coming up with their questions and are encouraged to ask questions that can ... new contexts Therefore, students should learn how to pose the right questions, collect and analyse information in order to draw conclusions and connect the diverse ideas that they have got access ... of phonological features: pronunciation of sounds, contrast between diff erent sounds, intonation and connected speech, among others Trang 17Over to You!This section explores the topic of the

Ngày tải lên: 30/08/2023, 16:36

... resource allocation to maximize production efficiency within the economy.Economist Adam Smith (1776) defines efficiency in economic activity as the revenue generated from the consumption of goods ... simultaneously, the study utilizes the System-GMM (S-GMM) model to enhance estimation accuracy and address model inaccuracies.CONTRIBUTION OF THE THESISThe research offers empirical insights into the connection ... firms.The thesis has some following specific objectives to achieve the above overall objective: Firstly, suggesting the model research on the impact of capital structure on firm performance Secondly,

Ngày tải lên: 13/09/2023, 16:09

... to operational efficiency, such as changes in economic policies or rare events, leading to inaccurate conclusions Thirdly, the thesis only focused on quantitative factors to evaluate factors but ... Joint Stock Company 6 CDR Dong Nai Rubber Construction Joint Stock Company 7 CSV South Basic Chemicals Joint Stock Company 8 DAG Dong A Plastic Joint Stock Company 9 DCM Petro Viet Nam Ca Mau ... according to the results after evaluating.RESEARCH QUESTIONSResearch questions lay the groundwork for the thesis and help the researchers focus on the specific aspects of their subject that they

Ngày tải lên: 10/07/2024, 16:20

... The cash conversion cycle (CCC) The cash conversion cycle represents the period of time from the time of purchasing raw materials from suppliers until collecting money for product consumption ... Specifically, the relationship between the cash conversion cycle and the business cycle is shown in the figure 3.2 below: Figure 3.2: Relationship between cash conversion cycle and business cycle ... Ndonwabile (2020) confirmed that managing working capital of firms by shortening the cash conversion cycle can significantly improve the profitability of firms The cash conversion cycle (CCC)

Ngày tải lên: 10/07/2024, 16:28