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What are the disadvantages of using persistent connection in PDO
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Please be sure to read this answer below, which details ways to mitigate the problems outlined here.
The same drawbacks exist using PDO as with any other PHP database interface that does persistent connections: if your script terminates unexpectedly in the middle of database operations...
Why is using the JavaScript eval function a bad idea?
...hallenging
(no line numbers, etc.)
eval'd code executes slower (no opportunity to compile/cache eval'd code)
Edit: As @Jeff Walden points out in comments, #3 is less true today than it was in 2008. However, while some caching of compiled scripts may happen this will only be limited to scripts that...
Seeking clarification on apparent contradictions regarding weakly typed languages
... the 15th of October, 2012. Thanks for the great question!
What does it really mean for a language to be "weakly typed"?
It means "this language uses a type system that I find distasteful". A "strongly typed" language by contrast is a language with a type system that I find pleasant.
The t...
Confused about stdin, stdout and stderr?
I am rather confused with the purpose of these three files. If my understanding is correct, stdin is the file in which a program writes into its requests to run a task in the process, stdout is the file into which the kernel writes its output and the process requesting it accesses the informatio...
How can i tell if an object has a key value observer attached
...removeObservers: for a key path and that key path has not been registered, it cracks the sads. like -
10 Answers
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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
What's the preferred way to do command substitution in bash?
3 Answers
3
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Make anchor link go some pixels above where it's linked to
...o do the work of jumping to the anchor for us and then we will use that position to offset from.
EDIT 1:
As was pointed out by @erb, this only works if you are on the page while the hash is changed. Entering the page with a #something already in the URL does not work with the above code. Here is a...
Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming? [closed]
I teach a sort of "lite" C++ programming course to novices ("lite" meaning no pointers, no classes, just plain old C, plus references and STL string and vectors). Students have no previous experience in programming, so I believe that using an interactive debugger would help them understand program f...
How to throw an exception in C?
... In C the errors are notified by the returned value of the function, the exit value of the process, signals to the process (Program Error Signals (GNU libc)) or the CPU hardware interruption (or other notification error form the CPU if there is)(How processor handles the case of division by zero).
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Arrays, heap and stack and value types
..., as I can, for example, pass myIntegers to other parts of the program and it'd clutter up the stack if they were left on it all the time. Or am I wrong? I'd guess they'd just be boxed and would live on the heap for as long the array existed.
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