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Ignoring time zones altogether in Rails and PostgreSQL
... may have to) deal with more than one time zone, use timestamptz. In other words: If there can be any doubt or misunderstanding about the assumed time zone, go with timestamptz. Applies in most use cases.
Clients like psql or pgAdmin or any application communicating via libpq (like Ruby with the pg...
Is multiplication and division using shift operators in C actually faster?
... literal approach optimised approach
#define N 0
int x; .word x xor registerA, registerA
x *= N; move x -> registerA
move x -> registerB
A = B * immediate(0)
store registerA -> x
...............do...
What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...ssible within the function scope ONLY (as Vivin Paliath puts it). In other words, these variables are not visible/reachable outside the function. See live demo.
Javascript has function scoping. "Parameters and variables defined in a function are not visible outside of the function, and that a varia...
What is the real overhead of try/catch in C#?
...try-block and every catch-block-i (for every i from 1 to n).
In other words, at the beginning of each try statement:
all assignments made to visible objects prior to entering the try statement must be complete, which requires a thread lock for a start, making it useful for debugging race cond...
Read/write to Windows registry using Java
...
How do I get this to read a dword? His sample works just fine for a string, but I need to get an actual value out to read now. Just comes out as null.
– jerhynsoen
Aug 9 '12 at 17:32
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Break a previous commit into multiple commits
...
Word of caution: with this approach I lost the commit message.
– user420667
Dec 20 '16 at 19:08
11
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Trusting all certificates using HttpClient over HTTPS
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@sweeney In other words you are now liable to man-in-the-middle attacks. You should also note that that code doesn't meet the specification: check the Javadoc. getAcceptedIssuers() isn't allowed to return null.
– Marquis ...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
... to solve COMPLETELY different tasks and have in common only the "message" word.
– Igor S.
Mar 5 '15 at 22:22
...
Is cout synchronized/thread-safe?
...oes if two threads try to modify the same location concurrently.
In other words, even if it happens to work fine in your current environment, it might break when you update any of your runtime, compiler, or CPU.
Executive summary: "I wouldn't". Build a logging class that does proper locking, or m...
Learning assembly [closed]
...tead of simply starting at the beginning and disassembling every four byte word linearly through memory as you would with the ARM or every two bytes like the msp430 (The msp430 has variable length instructions but you can still get by going linearly through memory if you start at the entry points fr...