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Difference between Dictionary and Hashtable [duplicate]
...ns)
A subtle but important difference is that Hashtable supports multiple reader threads with a single writer thread, while Dictionary offers no thread safety. If you need thread safety with a generic dictionary, you must implement your own synchronization or (in .NET 4.0) use ConcurrentDictionary&...
Visual C++: How to disable specific linker warnings?
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(For the record and before the thread disappears on the msdn forums)
You can't disable the warning (at least under VS2010) because it is on the list of the warnings that can't be disabled (so /wd4099 will not work), but what you can do instead is patch link....
Java system properties and environment variables
...agaveluSugumar Yes, you need to restart: Environment variable settings are read from the environment on start up. i.e. System.getenv(String name) does not dynamically read the value from the system at call time.
– Bohemian♦
May 25 '17 at 16:01
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Get generic type of class at runtime
...e says that actually it's a lure and there is no real need for it. You can read both links, I found them quite interesting.
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
I'm reading some lecture notes of my C++ lecturer and he wrote the following:
23 Answers
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DateTime vs DateTimeOffset
...not the (utc time, offset) pair. In other words, the offset from UTC is already reflected in the local time. To convert back to utc, invert the sign of the offset and apply it to the local time.
– Matt Johnson-Pint
Feb 27 '14 at 20:15
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What does the CSS rule “clear: both” do?
...the POOL has no idea how many objects are floating, or what the length or breadth of the floated elements are, so it simply won't stretch.
Normal Flow Of The Document
Sections Floated To Left
Cleared Floated Elements To Stretch Background Color Of The Container
(Refer [Clearfix] section of this ...
How can I index a MATLAB array returned by a function without first assigning it to a local variable
For example, if I want to read the middle value from magic(5) , I can do so like this:
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Which is faster in Python: x**.5 or math.sqrt(x)?
... If not, then why go with code which is cryptic over code that is easy to read? The time difference is would be less than anybody could notice in just about any application I could forsee. I really don't mean to put down your question, but it seems that you're going a little too far with prematur...
Will using 'var' affect performance?
... the choice; I'll take that extra bit of "noise" to ensure I'm writing and reading exactly what I think I am at code/debug time. * shrug *
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