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    I want to protect some rows from deletion and I prefer to do it using triggers rather than logic of my application. ... way to do such a thing? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a folder where I keep my images, named img/. I have a table with all of my images: <table ... button with the value:"Delete image". See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Reading and tinkering with the new features offered by ECMAScript 6. The new 'const' statement for writing constant ... to address this issue? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    what is the difference between deleting a pointer, setting it to null, and freeing it. delete ptr; vs. ptr=NULL; vs. free(ptr); See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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