In December 2011, CL 5489100 added the cgo and nocgo build tags. Because each line applied independently, multiple lines were in effect AND’ed together. That is, each line listed a set of OR’ed conditions.
GOLAND RUN GOFMT ON SAVE WINDOWS
Originally, the arguments to a build constraint were a list of alternatives, each of which took one of three possible forms: an operating system name (GOOS), an architecture (GOARCH), or both separated by a slash (GOOS/GOARCH).ĬL 5018044 used a //build prefix, but a followup discussion on CL 5011046 while updating the tree to use the comments led to the syntax changing to // +build in CL 5015051.įor example, this line indicated that the file should build on Linux for any architecture, or on Windows only for 386: // +build linux windows/386
GOLAND RUN GOFMT ON SAVE MANUAL
Until then, the convention was only a manual one, maintained by hand in the package Makefiles.įor more complex situations, such as files that applied to multiple operating systems (but not all), build constraints were introduced in September 2011. When the go/build package was written in August 2011, it added explicit support for the convention that files named *_GOOS.*, *_GOARCH.*, or *_GOOS_GOARCH.* only compiled on those specific systems. This section uses the generic names GOOS and GOARCH to stand in for any of the specific names (windows, linux, 386, amd64, and so on). Go refers to the current operating system as $GOOS and the current architecture as $GOARCH. (Compared with the C preprocessor’s conditional selection of individual lines, selection of individual files is easier to understand and requires no special support in tools that parse single source files.) Go’s solution to this problem is conditional compilation at the file level: each file is either in the build or not.
GOLAND RUN GOFMT ON SAVE CODE
It can be necessary to write different Go code for different compilation contexts. This design draft is based on a preliminary discussion on /issue/25348, but discussion of this design draft should happen on the Go Reddit thread. The plan also includes a graceful transition from // +build to //go:build syntax that avoids breaking the Go ecosystem. These changes should make build constraints easier to use and reduce time spent debugging mistakes. The plan includes relaxing the possible placement of //go:build lines compared to // +build lines, as well as rejecting misplaced //go:build lines. We present a possible plan to transition from the current // +build lines for build tag selection to new //go:build lines that use standard boolean expression syntax. The prototype code is also available for trying out. There is also a video presentation of this draft design.
We are using this change to experiment with new ways to scale discussions about large changes.įor this change, we will use a Go Reddit thread to manage Q&A, since Reddit's threading support can easily match questions with answers and keep separate lines of discussion separate. The goal of circulating this draft design is to collect feedback to shape an intended eventual proposal. This is a Draft Design, not a formal Go proposal, because it describes a potential large change. Leave your comments here, tweet us, open an issue in our tracker, or drop us a message in the Gophers Slack #goland channel.Bug-resistant build constraints - Draft Design That’s it for today! Let us know what you think about the new features. To try the intention action, place the caret on the elements you want to alter, then press ⌥ ↩ ( Alt + Enter) and select either Put comma-separated elements on one line or Put comma-separated elements on multiple lines as appropriate.įor XML, HTML, and JSX, you’ll see a slightly different wording for this action – Put attributes on separate lines or Put attributes on one line. The intention action works for array and object literals parameter and argument lists XML, HTML, and JSX attributes and other similar elements. We now also have a similar intention action for JavaScript projects. GoLand has an intention action for Go files that lets you quickly put arguments on separate lines, and, if needed, back on one line. JavaScript: new intention action for putting elements on multiple lines
MongoDB: Completion for filter Ĭode completion now works when filtering data in MongoDB collections.
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