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How do you debug PHP scripts? [closed]
...r_dump and print at various points to see where your flow goes wrong. When all else fails though and all I have is SSH and vim I still var_dump()/die() to find where the code goes south.
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Show current assembly instruction in GDB
...x │
│0x7ffff740d769 <__libc_start_main+233> callq *0x18(%rsp) │
>│0x7ffff740d76d <__libc_start_main+237> mov %eax,%edi │
│0x7ffff740d76f <__libc_start_main+239> callq 0x7ffff7427970 <exit> ...
Has anyone actually implemented a Fibonacci-Heap efficiently?
... (In the line typedef relaxed_heap<Vertex, IndirectCmp, IndexMap> MutableQueue, change relaxed to fibonacci.) I first forgot to compile with optimizations, in which case Fibonacci and binary heaps perform about the same, with Fibonacci heaps usually outperforming by an insignificant amount. ...
How to duplicate sys.stdout to a log file?
...est way to accomplish logging when a python app is making a lot of system calls?
17 Answers
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Proper way to return JSON using node or Express
...n do this by changing the options instead.
'json replacer' JSON replacer callback, null by default
'json spaces' JSON response spaces for formatting, defaults to 2 in development, 0 in production
Not actually recommended to set to 40
app.set('json spaces', 40);
Then you could just respond with so...
Why does this go into an infinite loop?
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Note: Originally I posted C# code in this answer for purposes of illustration, since C# allows you to pass int parameters by reference with the ref keyword. I've decided to update it with actual legal Java code using the first MutableInt...
What's the difference between RouteLink and ActionLink in ASP.NET MVC?
...er, and cannot ever match the wrong route because you changed your routing table.
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How do I put an 'if clause' in an SQL string?
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You can use the multiple-table UPDATE syntax to effect an ANTI-JOIN between purchaseOrder and itemsOrdered:
UPDATE purchaseOrder p LEFT JOIN itemsOrdered i
ON p.purchaseOrder_ID = i.purchaseOrder_ID
AND i.status = 'PENDING'
SET p.purchaseO...
What to do Regular expression pattern doesn't match anywhere in string?
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Contrary to all the answers here, for what you're trying to do regex is a perfectly valid solution. This is because you are NOT trying to match balanced tags-- THAT would be impossible with regex! But you are only matching what's in one ...
How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...'`"
But standard double-clickable application bundles don't use JDKs installed under /Library/Java at all. Old-style .app bundles using Apple's JavaApplicationStub will use Apple Java 6 from /System/Library/Frameworks, and new-style ones built with AppBundler without a bundled JRE will use the "p...