of Google’s open- source projects. As every C++ programmer knows, the language has many powerful features, but this power brings with it complexity, which in turn can make code more bug-prone and harder These rules exist to keep the code base manageable while still allowing coders to use C++ language features produc- tively. Style, also known as readability, is what we call the conventions that govern our standard features and idioms are flawed, or were just designed without our codebase’s needs in mind. In those cases (as described below) it’s appropriate to constrain or ban standard features. In some

Values Properties True/False evaluations Deprecated Language Features Lexical Scoping Function and Method Decorators Threading Power Features 1 Python Style Rules Semicolons Line length Parentheses Indentation a alphanumeric code (C0112) and a sym- bolic name (empty-docstring). Prefer the symbolic names in new code or when updating existing code. If the reason for the suppression is not clear from the symbolic Makes it harder to deploy code because you have to replicate the package hierarchy. Decision: All new code should import each module by its full package name. Imports should be as follows: # Reference

order its members in some logical order, which its maintainer could explain if asked. For example, new methods are not just habitually added to the end of the class, as that would yield “chronological by followed by else or a comma. Examples: return () -> { while (condition()) { method(); } }; return new MyClass() { @Override public void method() { if (condition()) { try { something(); } catch (ProblemException try/catch/finally). Example: void doNothing() {} 4.2 Block indentation: +2 spaces Each time a new block or block-like construct is opened, the indent increases by two spaces. When the block ends, the

plots, and finally, 5. recompiles the sources of the paper ... to produce a new PDF for the paper that contains the new graphs. “  Note: It takes time, plan from start  We prepared for SIGMOD 2019

xor (but not both) if (is.null(ylim)) ylim <- c(0, 0.06) Always begin the body of a block on a new line. BAD: if (is.null(ylim)) ylim <- c(0, 0.06) if (is.null(ylim)) {ylim <- c(0, 0.06)} Surround

 Plural allows to drop articles  Use guarded spaces for references that should not appear on a new line  Clear References  Make sure there are no unclear “it” or “this” references  Add descriptive

Practical. SIGMOD 2021  #14.2 Guido Moerkotte, Thomas Neumann: Analysis of Two Existing and One New Dynamic Programming Algorithm for the Generation of Optimal Bushy Join Trees without Cross Products