Session One Gather students together for a story. Show them the cover of Pancakes for Breakfast by Tomie dePaola. Tell them that this book has pictures but no words, so they are going to tell the story themselves.
Simple Report all non-const variables declared at namespace scope. Avoid singletons Singletons are basically complicated global objects in disguise. In a multi-threaded environment, the initialization of the static object does not introduce a race condition unless you carelessly access a shared object from within its constructor.
Note that the initialization of a local static does not imply a race condition.
However, if the destruction of X involves an operation that needs to be synchronized we must use a less simple solution. If you, as many do, define a singleton as a class for which only one object is created, functions like myX are not singletons, and this useful technique is not an exception to the no-singleton rule.
Enforcement Very hard in general. Look for classes with names that include singleton. Look for classes for which only a single object is created by counting objects or by examining constructors. Make interfaces precisely and strongly typed Reason Types are the simplest and best documentation, have well-defined meaning, and are guaranteed to be checked at compile time.
Also, precisely typed code is often optimized better. That is error-prone and often verbose. Consider using a variant or a pointer to base instead. For generic code these Ts can be general or concept constrained template parameters.
An int can carry arbitrary forms of information, so we must guess about the meaning of the four ints. Most likely, the first two are an x,y coordinate pair, but what are the last two? Comments and parameter names can help, but we could be explicit: Hard to do well Look for member functions with many built-in type arguments.
State preconditions if any Reason Arguments have meaning that may constrain their proper use in the callee. The type system cannot easily and naturally express that, so we must use other means. For now, we place it in the definition function body.
Expects is described in GSL. Note Prefer a formal specification of requirements, such as Expects p. Note Most member functions have as a precondition that some class invariant holds. That invariant is established by a constructor and must be reestablished upon exit by every member function called from outside the class.
The rules for passing pointers. Prefer Expects for expressing preconditions Reason To make it clear that the condition is a precondition and to enable tool use. This can make them hard to distinguish from ordinary code, hard to update, hard to manipulate by tools, and may have the wrong semantics do you always want to abort in debug mode and check nothing in productions runs?
Once language support becomes available e. Note Expects can also be used to check a condition in the middle of an algorithm. Note No, using unsigned is not a good way to sidestep the problem of ensuring that a value is nonnegative. Enforcement Not enforceable Finding the variety of ways preconditions can be asserted is not feasible.
Warning about those that can be easily identified assert has questionable value in the absence of a language facility.
State postconditions To detect misunderstandings about the result and possibly catch erroneous implementations. Note Postconditions are especially important when they relate to something that is not directly reflected in a returned result, such as a state of a data structure used.C++ Core Guidelines.
April 16, Editors: Bjarne Stroustrup; Herb Sutter; This is a living document under continuous improvement. Had it been an open-source .
Draw Label Caption is a prewriting technique where students plan a story or piece of writing by drawing a picture. They then activate vocabulary and descriptive words by labeling the picture and captioning it.
Drawing in IM is the way to add new elements to an existing image. While a lot of text drawing is covered in the examples page for Compound Font Effects, and in Image Annotating, this page deals with the other more general aspects of the "-draw" operator..
The draw command started as a means to create simple images. !K7 management services are available both for artists signed to the label and those who release music elsewhere.
Drawing on 30 years of music industry experience and knowledge of the global music market,!K7 offers credible and informed guidance to artists. Label - Simple Text Label Basic Labels Creating a font image using a "label:" image, is the more typical way of drawing a font quickly in benjaminpohle.com biggest advantage is that generates its own canvas according the current "-background" and "-fill" color settings, which is sized to match the drawn benjaminpohle.com example here is a typical generated label.
WRITE. Why did the artist choose to change the pattern and color of the or anything else you can think of that you think defines you.
Draw yourself as that object. Milton Glaser “We Are All African”, Offset Print. 24” x 36” label each component with how you think others might interpret who you are based on.