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Bash if [ false ] ; returns true
...ash
The if statement takes a command as an argument (as do &&, ||, etc.). The integer result code of the command is interpreted as a boolean (0/null=true, 1/else=false).
The test statement takes operators and operands as arguments and returns a result code in the same format as if. An alias ...
Singular or plural controller and helper names in Rails
... controllers that are tied directly to a specific model: User -> Users, etc.), but you can use whatever you want.
As for helpers, all helpers are available for all controllers by default, so technically, how you name your helpers doesn't matter at all. It's just another convention to keep a cont...
How to detect idle time in JavaScript elegantly?
...idle " time in JavaScript?
My primary use case probably would be to pre-fetch or preload content.
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ASP.NET MVC - Find Absolute Path to the App_Data folder from Controller
...ork in some situations where there isn't an HttpContext (application_start etc)
– mcintyre321
Sep 15 '14 at 12:18
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Lowercase JSON key names with JSON Marshal in Go
...hy would they make the fields with lowercase letters in the generated JSON etc, etc. Then I came across this thread and thought "OMG That's brilliant!!!". I even jumped and explained my girlfriend why I am so excited :D It's so cool :)))
– nyxz
Feb 10 '14 at 21...
How do I use arrays in C++?
...(Note that the implicitly generated pointer has no name, so I wrote x+0 in order to identify it.)
If, on the other hand, x denotes a pointer to the first (or any other) element of an array, then array-to-pointer decay is not necessary, because the pointer on which i is going to be added already exi...
Avoid browser popup blockers
...ers can backtrack a little to see if the caller's caller was a mouse click etc. Keep it as shallow as you can to avoid the popup blockers.
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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
...L. For fixed length types (int, numeric, float, datetime, uniqueidentifier etc) the space is consumed even for records added after the columns were dropped. To get rid of the wasted space do ALTER TABLE ... REBUILD.
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When should I write the keyword 'inline' for a function/method?
...e fun() = 111 in both of the lines.
Case B:
Compile (notice reverse order):
g++ -std=c++11 inline222.cpp inline111.cpp
Output:
inline111: fun() = 222, &fun = 0x402980
inline222: fun() = 222, &fun = 0x402980
Discussion:
This case asserts what have been discussed in Case A.
Noti...
Python: Get relative path from comparing two absolute paths
...r/var/')
PosixPath('log')
>>> Path('/usr/var/log').relative_to('/etc/')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/Cellar/python3/3.5.1/Frameworks/Python.framework/Versions/3.5/lib/python3.5/pathlib.py", line 851, in relative_to
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