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Has an event handler already been added?

Is there a way to tell if an event handler has been added to an object? I'm serializing a list of objects into/out of session state so we can use SQL based session state... When an object in the list has a property changed it needs to be flagged, which the event handler took care of properly before...
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How to use npm with node.exe?

...users: read/execute Set global configuration settings (Administrator Command Prompt) npm config --global set prefix "C:\ProgramData\npm" npm config --global set cache "C:\ProgramData\npm-cache" Add C:\ProgramData\npm to your System's Path environment variable If you want to change your use...
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How do I force make/GCC to show me the commands?

...not seem to get GCC (or maybe it is make??) to show me the actual compiler and linker commands it is executing. 7 Answers...
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Use CSS3 transitions with gradient backgrounds

...h a background gradient, you have to set an opacity on a container element and 'transition` the opacity. (There have been some browser releases that supported transitions on gradients (e.g IE10. I tested gradient transitions in 2016 in IE and they seemed to work at the time, but my test code no lo...
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How to check for changes on remote (origin) Git repository?

... "git fetch origin" and "git show-branch *master" were useful to me. – Léa Massiot May 16 '17 at 17:31 add a comment ...
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How do .gitignore exclusion rules actually work?

... @meowsqueak You could possibly ignore /a/b/c and then write a hook to git add --force any matching file pre-commit or something – Chris Jun 8 '10 at 23:42 ...
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Creating anonymous objects in php

... so there may be a few differences between anonymous classes in JavaScript and PHP. share | improve this answer | follow | ...
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PHP expresses two different strings to be the same [duplicate]

...umber format, so they will cast into number when they compares. 608E-4234 and 272E-3063 will both be float(0) because they are too small. For == in php, If you compare a number with a string or the comparison involves numerical strings, then each string is converted to a number and the co...
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How can I use break or continue within for loop in Twig template?

I try to use a simple loop, in my real code this loop is more complex, and I need to break this iteration like: 5 Answers...
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Does have to be in the of an HTML document?

... style tags need to be inside the head of an HTML document? The 4.01 standard implies that, but it's not explicitly stated: ...