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instanceof Vs getClass( )
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@overexchange - You cannot validly infer that all use of instanceof (for example) is bad design. There are situations where it may be the best solution. Same for getClass(). I will repeat that I said "overuse" and not "use". Every case needs to be judged on its merit...
In PHP what does it mean by a function being binary-safe?
...ing is more specific, referring only to what Michael gives as an example.
All strings in PHP have a length associated, which are the number of bytes that compose it. When a function manipulates a string, it can either:
Rely on that length meta-data.
Rely on the string being null-terminated, i.e.,...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...he CPU would have to wait on. The register renaming mechanism would essentially be defeated if it wasn't done that way.
This way you can write fast code using 32-bit values in 64-bit mode without having to explicitly break dependencies all the time. Without this behaviour, every single 32-bit instr...
Best practices for reducing Garbage Collector activity in Javascript
I have a fairly complex Javascript app, which has a main loop that is called 60 times per second. There seems to be a lot of garbage collection going on (based on the 'sawtooth' output from the Memory timeline in the Chrome dev tools) - and this often impacts the performance of the application.
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What is the difference between “def” and “val” to define a function
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Ismail Marmoush
11.4k2222 gold badges7171 silver badges107107 bronze badges
answered Sep 19 '13 at 6:15
seniasenia
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Is the order of elements in a JSON list preserved?
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Practically speaking, if the keys were of type NaN, the browser will not change the order.
The following script will output "One", "Two", "Three":
var foo={"3":"Three", "1":"One", "2":"Two"};
for(bar in foo) {
alert(foo[bar]);...
How to ignore whitespace in a regular expression subject string?
...ld do the trick:
/c(?:\n\s*)?a(?:\n\s*)?t(?:\n\s*)?s/
See this page for all the different variations of 'cats' that this matches.
You can also solve this using conditionals, but they are not supported in the javascript flavor of regex.
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DBMS_OUTPUT.PUT_LINE not printing
...green plus icon to enable DBMS Output for a particular session.
Additionally, assuming that you don't want to print the literal "a.firstNamea.lastName" for every row, you probably want
FOR row IN quote_recs
LOOP
DBMS_OUTPUT.PUT_LINE( row.firstName || ' ' || row.lastName );
END LOOP;
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What is “Service Include” in a csproj file for?
...ts. This added seconds of delay to startup and solution open scenarios for all users, majority of whom don't use tests.
In Visual Studio 2013, we changed it so that Test Explorer package is loaded only when the solution contains one or more test projects. Test projects are identified in two differen...
C++ semantics of `static const` vs `const`
In C++ specifically, what are the semantic differences between for example:
2 Answers
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