Skip to main content

Featured

Build docker image from multiple build contexts

Build docker image from multiple build contexts Building a docker image requires specifying a source of truth to include in the image from a local directory or a remote git repository. In the previous version, the docker BuildKit allows users to specify the build context from a single source of truth only. However, the engineers may need to have the context from different locations based on the type of files. For instance, icons, images or other resources that are not included in the same package, including the resource from other docker images. Fortunately, the Docker Buildx toolkit supports multiple build context flag for Docker 1.4. Let's learn how to use this new feature. The following list is a shortcut for jumping into a specific topic handy. What version of Docker is this tutorial targeting? How to specify the version of Dockerfile frontend? Ho

未指定大小的vector取址問題

目前使用vector來當做資料儲存用的array(這邊的資料都是用copy的方式存入vector),剛好又需要在thread內要去更新vector內的資料。
所以是利用取址的方式來將資料寫回原本使用的vector內。

此時發生只要有新資料進來的時候,原本取到的位置的值會被變更。

這邊是懷疑因為vector自動重新分配大小時,會將原本的就資料搬到新的記憶體位置。
所以原本參照的位置就變成沒有使用或是被別的變數使用了,所以導致只要有新資料進來,值就錯誤的問題。

後來重新於一開始就設定vector的capacity,之後下去運作後,先前的問題就都不見了,所以有以上之推論。

不過在map上並沒有發生類似的狀況,所以這邊還需要在詳查一下吧

Comments

Popular Posts