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Restrict varchar() column to specific values?
...ant a check constraint.
CHECK constraints determine the valid values
from a logical expression that is not
based on data in another column. For
example, the range of values for a
salary column can be limited by
creating a CHECK constraint that
allows for only data that ranges from
...
Useful example of a shutdown hook in Java?
... do a graceful "reject all clients upon hitting Control-C" in terminal.
From the docs:
When the virtual machine begins its shutdown sequence it will start all registered shutdown hooks in some unspecified order and let them run concurrently. When all the hooks have finished it will then run a...
Can ordered list produce result that looks like 1.1, 1.2, 1.3 (instead of just 1, 2, 3, …) with css?
...he default ol behaviour. It can easily be removed by deleting the last "." from the content property, but this just looks a bit odd to me.
– slightlyfaulty
Aug 12 '14 at 18:20
...
How to detect if a function is called as constructor?
... a new instance of* x when calling x as a constructor is indistinguishable from a pre-existing instance of x passed as this when calling x as a function, unless you assign a property to every new object created by x as it is constructed:
function x(y) {
var isConstructor = false;
if (this i...
How to TryParse for Enum value?
...is available and works without extra coding. More information is available from MSDN: msdn.microsoft.com/library/vstudio/dd991317%28v=vs.100%29.aspx
– Christian
Sep 19 '13 at 9:36
...
Gradle alternate to mvn install
...s will install the sdk into .m2 right ? And mavenLocal() also gets info from .m2 and .gradle ?
– Rajmahendra
May 26 '11 at 10:01
...
Is returning null bad design? [closed]
I've heard some voices saying that checking for a returned null value from methods is bad design. I would like to hear some reasons for this.
...
Length of generator output [duplicate]
...
len(list(gen)),
len([_ for _ in gen]),
sum(1 for _ in gen),
ilen(gen) (from more_itertool),
reduce(lambda c, i: c + 1, gen, 0),
sorted by performance of execution (including memory consumption), will make you surprised:
```
1: test_list.py:8: 0.492 KiB
gen = (i for i in data*1000); t0 = m...
Simpler way to put PDB breakpoints in Python code?
...
You can run your program into pdb from the command line by running
python -m pdb your_script.py
It will break on the 1st line, then you'll be able to add a breakpoint wherever you want in your code using the break command, its syntax is:
b(reak) [[f...
Combining C++ and C - how does #ifdef __cplusplus work?
...lessly trapped inside of extern "C" regions, but it isn't such a good idea from a cleanliness perspective.
Now, specifically regarding your numbered questions:
Regarding #1: __cplusplus will stay defined inside of extern "C" blocks. This doesn't matter, though, since the blocks should nest neatly...