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Task vs Thread differences [duplicate]
...atively safely (e.g. not in finally clauses etc.), so it will help against errors like infinite loops etc. Using it in production-level code doesn't make much sense, though.
– Luaan
Mar 30 '15 at 12:14
...
Click button copy to clipboard using jQuery
...ndicating whether the copy was successful. It could be used to display an error message on failure. Firefox throws an exception on failure (in v39 at least), requiring a try/catch to handle the error.
– PointZeroTwo
Jul 27 '15 at 17:41
...
How do I iterate over an NSArray?
...ss the objects by index, you can run into strange exceptions or off-by-one errors (often long after the problem has occurred) that can be horrific to debug. Enumeration using one of the standard idioms has a "fail-fast" behavior, so the problem (caused by incorrect code) will manifest itself immedia...
Why shouldn't I use “Hungarian Notation”?
...ss unsafe data to functions requiring safe data. You should make it a type error, so that it is impossible to do so. Any unsafe data should have a type that is marked unsafe, so that it simply cannot be passed to a safe function. To convert from unsafe to safe should require processing with some kin...
What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
...sed at the top-level of a script.
js> {"t":"continue"}
typein:2: SyntaxError: invalid label:
typein:2: {"t":"continue"}
typein:2: ....^
For this example to be exploitable by way of Object() constructor remapping, it would require the API to have instead returned the object inside of a set of p...
Why is SELECT * considered harmful?
...rt in the long run.
If code depends on column order, SELECT * will hide an error waiting to happen if a table had its column order changed.
Even if you need every column at the time the query is written, that might not be the case in the future
the usage complicates profiling
Design
SELECT * is ...
CALL command vs. START with /WAIT option
...it-code-from-a-windows-command-line
call regsvr32.exe /s broken.dll
echo %errorlevel%
will always return 0 but
start /wait regsvr32.exe /s broken.dll
echo %errorlevel%
will return the error level from regsvr32.exe
sha...
JPA: How to have one-to-many relation of the same Entity type
...accordingly. Updating only one side of a bidirectional relationship is an error under JPA. Always update both sides of the relationship. This is written unambiguously on page 42 of the JPA 2.0 spec:
Note that it is the application that bears responsibility for maintaining the consistency of r...
X-Frame-Options Allow-From multiple domains
...tion to avoid adding allow-from when the browser is Chrome (it produces an error on the debug - console, which can quickly fill the console up, or make the application slow). That also means you need to modify the ASP.NET browser detection, as it wrongly identifies Edge as Chrome.
This can be done...
Python Infinity - Any caveats?
...back (most recent call last):
File "<stdin>", line 1, in ?
OverflowError: (34, 'Numerical result out of range')
The inf value is considered a very special value with unusual semantics, so it's better to know about an OverflowError straight away through an exception, rather than having an i...