prodopsy

Summary The goal of this article is to discuss the technical challenges of integrating an external USB fingerprint scanner with a React Native app (Expo) for both iOS and Android platforms. Key considerations include compatibility, security, and platform-specific limitations. Root Cause The root cause of the complexity in achieving this integration lies in the following … Read more

Summary The question revolves around making the global/sandbox object available in imported modules when using the vm2 library in Node.js. Specifically, it asks how to access sandbox properties or functions within modules required by the virtual machine. Key concepts include understanding how vm2 handles sandboxing and requiring external modules. Root Cause The root cause of … Read more

Summary The validation failure in XCode occurs due to invalid signature and invalid bundle issues. This happens when the application is not signed with a distribution certificate or when the bundle contains disallowed files. Root Cause The root cause of this issue is: Incorrect code signing settings in Xcode Use of ad hoc or development … Read more

Summary The performance issue with WS_DELIVERY_UPDATE is causing significant delays in processing large outbound deliveries with multiple Handling Units (HUs). The function module’s consistency checks against all existing database entries and assigned HUs are leading to degraded performance as the number of HUs increases. Root Cause The root cause of the performance issue is: Excessive … Read more

Summary The issue at hand is how to prevent a mongoose plugin from adding an organizationId field to sub-documents in a multi-tenant application. The current implementation uses a global plugin to handle adding organizationId during filters, saving, and aggregation, but it incorrectly adds this field to sub-documents. Root Cause The root cause of this issue … Read more

Summary The issue at hand is related to the unordered_map in C++ and how its iteration order can affect the results of floating-point calculations due to floating-point rounding errors. The question revolves around whether it’s possible to manipulate the hash seed used by GCC for unordered_map to reproduce a specific iteration order without modifying the … Read more

Summary The issue at hand is the slow flashing speed of pyOCD when used with a custom CMSIS-DAP probe to flash firmware to an rp2040 board. The current speed is approximately 20kB/s, which is significantly lower than the 80kB/s achieved with openOCD. The goal is to increase the flashing speed to a more acceptable level. … Read more