How to Find Missing Runtime Dependencies in .NET Summary TargetInvocationException errors with inner FileNotFoundException indicate missing runtime assemblies required by your .NET Framework 4.7.2 application. Unlike compilation dependencies, these are detected at runtime when the CLR fails to locate referenced assemblies or their dependencies. Standard tools like Process Explorer only show loaded modules, not failed … Read more
Summary The Excel add-in is intermittently crashing when a new Excel book is opened while old books are open and functions are running. This issue is reproducible with a clean install of the add-in and is caused by the recalculation of functions across all workbooks when a new workbook is opened. Root Cause The root … Read more
Incident Report: Uncontrolled Cache Thrashing During MESI Protocol Experiment Summary A cache-coherence experiment caused severe source degradation due to uncontrolled cache thrashing and False Sharing in a shared memory region. The experiment pinned processes to different cores and measured memory latency via rdtsc, but inadvertently triggered L1-cache saturation and core-to-core coherence stalls lasting 150ms, affecting … Read more
Summary The issue at hand is that Blogspot’s drop-down menu is not displaying all items on mobile devices, specifically showing only 4 out of 7 list items. This problem is related to CSS media queries and responsive design. Root Cause The root cause of this issue is due to the following reasons: Insufficient max-height in … Read more
Postmortem: Text Field Extraction Limitations in iOS Keyboard Extensions Summary An attempt to retrieve the entire text from a text field via documentContextBeforeInput and “ in an iOS keyboard extension unexpectedly returned only ~200 characters. This occurs due to technical constraints生怕Apple’s keyboard API deliberately restricts surrounding text exposure for performance and security. Root Cause System-enforced … Read more
Summary The JMS destination lookup error on JBOSS EAP 8 occurs when the application attempts to look up a JMS queue or topic using the InitialContext. The error is caused by a ClassNotFoundException for the ActiveMQJMSConnectionFactory class. This issue arises due to a missing dependency or incorrect configuration in the application. Root Cause The root … Read more
其中的关键在于使用JSONata进行数组过滤操作。 ## Summary A developer attempted to retrieve a specific IP address from an unordered array of IP addresses in a JSON document using JSONata. The challenge arose because the array elements were not guaranteed to be in a fixed order, requiring a search method rather than positional access. This highlighted a gap in understanding … Read more
Summary This postmortem details a compilation error encountered in a C program that calculates the ionization energy of Hydrogen using long double precision. The error main.c:9:21: error: exponent has no digits appeared due to invalid Unicode characters masquerading as mathematical operators and multiple C syntax violations. The solution required replacing Unicode exponents and fixing syntax … Read more
Summary The question revolves around creating an interactive 3D scatter plot with multiple dropdown menus for a multi-indexed DataFrame using Plotly. The goal is to have one dropdown menu for each level in the DataFrame’s multi-index, allowing for efficient selection and visualization of data, especially when dealing with large datasets. Root Cause The root cause … Read more
Summary The question revolves around whether LD_PRELOAD can replace a function resolved via dlopen() and dlsym(). In a scenario where a program dynamically loads liba.so, resolves and calls func1() from it, and another library libb.so redefines func1(), the goal is to use LD_PRELOAD to force the program to use func1() from libb.so instead of the … Read more