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Are PHP Variables passed by value or by reference?

...ho $a->getValue() . ", " . $b->getValue() . "\n"; Outputs: b, a in order to pass by reference. share | improve this answer | follow | ...
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How to 'grep' a continuous stream?

... Turn on grep's line buffering mode when using BSD grep (FreeBSD, Mac OS X etc.) tail -f file | grep --line-buffered my_pattern You don't need to do this for GNU grep (used on pretty much any Linux) as it will flush by default (YMMV for other Unix-likes such as SmartOS, AIX or QNX). ...
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How can I fix the Microsoft Visual Studio error: “package did not load correctly”?

...ssional, the folder will be called "Professional" instead of "Enterprise", etc.) Step 3: copy/paste the below command gacutil -if Common7\IDE\PublicAssemblies\Microsoft.VisualStudio.Shell.Interop.8.0.dll Hit Enter... It will resolve the issue... Otherwise, you can also add the following to the...
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How to draw a custom UIView that is just a circle - iPhone app

... FYI, in order for your view to be a circle using QuartCore, your corner radius needs to be half your frame height/width. This is the easiest way of making a circle, but is not necessarily the most efficient. If performance is vital, ...
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How to sort a Ruby Hash by number value?

... number was returning as a string, that fixed it.. I had a2 and a1 in that order because I wanted the results to sort decending.. thanks for your feedback though. – Dustin M. Mar 29 '10 at 22:18 ...
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How do I find the authoritative name-server for a domain name?

... An example: $ whois stackoverflow.com [...] Domain servers in listed order: NS51.DOMAINCONTROL.COM NS52.DOMAINCONTROL.COM As for the extra credit: Yes, it is possible. aryeh is definitely wrong, as his suggestion usually will only give you the IP address for the hostname. If y...
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How to write :hover condition for a:before and a:after?

...r, then you can get away with using single colons just fine. This specific order of pseudo-classes and pseudo-elements is stated in the spec: One pseudo-element may be appended to the last sequence of simple selectors in a selector. A sequence of simple selectors is a chain of simple selectors that...
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Save ArrayList to SharedPreferences

... As a reminder to those coming across this answer: a Set is unordered, so saving a StringSet will lose the order you had with your ArrayList. – David Liu Sep 26 '18 at 19:15 ...
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Update all objects in a collection using LINQ

... {c.PropertyToSet = value; return c;}).ToList(); The ToList is needed in order to evaluate the select immediately due to lazy evaluation. share | improve this answer | foll...
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?

...nst char* strings char by char into dynamically allocated char* strings in order to modify them. Example: #include <iostream> void print(char* ch); void print(const char* ch) { std::cout<<ch; } int main() { print("Hello"); return 0; } ...