sider the following snippet, for example: namespace X { inline namespace Y { void foo(); } } The expressions X::Y::foo() and X::foo() are interchangeable. Inline names- paces are primarily intended for ABI consistency ar- gument doesn’t apply in codebases with few deeply-nested pointer expressions since most const expressions have only one const, and it applies to the un- derlying value. In such cases, there’s defining a constexpr variable. Use of constexpr enables definition of constants with floating-point expressions rather than just literals; definition of constants of user-defined types; and defi- nition of constants

Functions List Comprehensions Default Iterators and Operators Generators Lambda Functions Conditional Expressions Default Argument Values Properties True/False evaluations Deprecated Language Features Lexical Comprehensions link￿ Okay to use for simple cases. Definition: List comprehensions and generator expressions provide a concise and efficient way to create lists and iterators without resorting to the use creation techniques. Generator expressions can be very efficient, since they avoid the creation of a list entirely. Cons: Complicated list comprehensions or generator expressions can be hard to read. Decision:

complicated groupings can be created by changing the Group By mode from Wildcard to RegEx (regular expressions). The substring (Substr) variants of the Group By mode will create groups for each set of nets rule checker from running. Custom rule syntax The custom design rule language is based on s-expressions and allows you to create design constraints that are not possible with the built-in constraints different netclasses. Parentheses can be 86 used to clarify the order of operations in complex expressions but they are not required. All the boolean operators have the same precedence and are evaluated

wildcards: * matches any characters, and ? matches any single character. You can also use regular expressions, such as /footprint value/ . The displayed information depends on the item type. In addition to complicated groupings can be created by changing the Group By mode from Wildcard to RegEx (regular expressions). The substring (Substr) variants of the Group By mode will create groups for each set of nets rule checker from running. Custom rule syntax The custom design rule language is based on s-expressions and allows you to create design constraints that are not possible with the built-in constraints

wildcards: * matches any characters, and ? matches any single character. You can also use regular expressions, such as /footprint value/ . The displayed information depends on the item type. In addition to complicated groupings can be created by changing the Group By mode from Wildcard to RegEx (regular expressions). The substring (Substr) variants of the Group By mode will create groups for each set of nets rule checker from running. Custom rule syntax The custom design rule language is based on s-expressions and allows you to create design constraints that are not possible with the built-in constraints

Boolean expression. Q: not ( ( not not True ) ) is A: Let’s think step by step. Remember that (i) expressions inside brackets are always evaluated first and that (ii) the order of operations from highest priority False. Q: True and False and not True and True is A: Let’s think step by step. Remember that (i) expressions inside brackets are always evaluated first and that (ii) the order of operations from highest priority answer is False. Q: not not ( not ( False ) ) is A: Let’s think step by step. Remember that (i) expressions inside brackets are always evaluated first and that (ii) the order of operations from highest priority

complicated groupings can be created by changing the Group By mode from Wildcard to RegEx (regular expressions). The substring (Substr) variants of the Group By mode will create groups for each set of nets rule checker from running. Custom rule syntax The custom design rule language is based on s-expressions and allows you to create design constraints that are not possible with the built-in constraints in different netclasses. Parentheses can be used to clarify the order of operations in complex expressions but they are not required. Some properties represent a physical measurement, such as a size, angle

10 ki mi gi ti 2 2 2 2 -12 -9 -6 -3 3 6 9 12 10 20 30 40 14 Regular expressions: if you’re familiar with regular expressions, these can be used too. The regular expression flavor used is the wxWidgets wxWidgets Advanced Regular Expression style, which is similar to Perl regular expressions. If the symbol specifies a default footprint, this footprint will be previewed in the lower right. If the symbol match any number of any characters, including none, and ? to match any character) and regular expressions. The nets that match the selected pattern are displayed to the right of the pattern list. For

formulating expressions in Scheme. The third thing to understand is that: Mathematical operators are also considered functions, and thus are listed first when writing mathematical expressions. This is: (let* ( variables ) expressions ) ‚‚‚‚‚‚‚‚ ‚ ‚ ‚ ‚ ‚ ‚‚‚‚‚‚ where variables are declared within parens, e.g., (a 2), and expressions are any valid Scheme expressions. Remember that the variables param­list) expressions) ‚‚‚‚‚‚‚‚ ‚ ‚ ‚ ‚‚‚‚‚‚ where name is the name assigned to this function, param-list is a space-delimited list of parameter names, and expressions is a series of expressions that the

wildcards: * matches any characters, and ? matches any single character. You can also use regular expressions, such as /footprint value/ . The displayed information depends on the item type. In addition to complicated groupings can be created by changing the Group By mode from Wildcard to RegEx (regular expressions). The substring (Substr) variants of the Group By mode will create groups for each set of nets 按钮，确保没有语法错误。 自定义规则中的任何错误将阻止设计规则 检查器的运行。 自定义规则语法 The custom design rule language is based on s-expressions and allows you to create design constraints that are not possible with the built-in constraints