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Pro JavaScript programmer interview questions (with answers) [closed]
...them about non-JS specific stuff like testing, workflows, version control, etc. to find out if they're a good programmer.
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Differences between hard real-time, soft real-time, and firm real-time?
...ions such as pacemakers, a large number of defense applications, avionics, etc.
Firm/soft real time systems can miss some deadlines, but eventually performance will degrade if too many are missed. A good example is the sound system in your computer. If you miss a few bits, no big deal, but miss t...
Is there a performance gain in using single quotes vs double quotes in ruby?
...ferences that are not significant and due to other factors (GC kicking in, etc.); remember, there can't be any difference in this case! Micro benchmarks like these are difficult to get right. See my gem fruity for a decent tool for this.
Note that if there is interpolation of the form "...#{...}......
How to log PostgreSQL queries?
...ration file. On Debian and Ubuntu GNU/Linux, this file usually resides at /etc/postgresql/$v/main/postgresql.conf, where $v is the server version. Also, on the aforementioned systems, when log_destination = 'stderr', the output is written to /var/log/postgresql/postgresql-$v-main.log, where $v is th...
Getting random numbers in Java [duplicate]
...wnload.oracle.com/javase/6/docs/api/java/lang/… ). So it's 0.0 to 49.999 etc. which becomes 1 to 50.999 etc. when you add 1, which becomes 1 to 50 when you truncate to int.
– Rup
May 5 '11 at 13:48
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What are the security risks of setting Access-Control-Allow-Origin?
... is automatically provided by the browser (cookies, cookie-based sessions, etc.), the requests triggered by the third party sites will use them too.
This indeed poses a security risk, particularly if you allow resource sharing not just for selected resources but for every resource. In this context ...
Difference between CPPFLAGS and CXXFLAGS in GNU Make
...the CFLAGS flag get passed to C++ compile lines? Sometimes. Not always. Etc, etc, etc.
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How to cast an Object to an int
...t;
Scenario 2: any numerical object
In Java Integer, Long, BigInteger etc. all implement the Number interface which has a method named intValue. Any other custom types with a numerical aspect should also implement Number (for example: Age implements Number). So you can:
int x = ((Number)yourOb...
Argument list too long error for rm, cp, mv commands
...eading NULL-delimited input. And the whole dangerous (broken, exploitable, etc.), is fairly ridiculous. Undoubtedly you should be careful when using xargs, but it is not quite eval/evil.
– Reinstate Monica Please
Jul 25 '14 at 22:37
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What are the most useful Intellij IDEA keyboard shortcuts? [closed]
...at calls this method, then the whole statement, then the containing block, etc.:
Ctrl+W
Basic Code Completion, to complete methods, keywords etc.:
Ctrl+Space
Go to Declaration. Use this to navigate to the declaration of a class, method or variable used somewhere in the code:
Ctrl+B
Introduce Vari...