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What does “use strict” do in JavaScript, and what is the reasoning behind it?
...ges.
In C, an extremely unfortunate representation of octalness was
selected: Leading zero. So in C, 0100 means 64, not 100, and 08 is an
error, not 8. Even more unfortunately, this anachronism has been
copied into nearly all modern languages, including JavaScript, where
it is only used...
How to implement a rule engine?
..."Contains", "C#" )
};
// compile the rules once
var compiledRules = rules.Select(r => CompileRule(r)).ToList();
public bool MatchesAllRules(User user)
{
return compiledRules.All(rule => rule(user));
}
Here is the implementation of BuildExpr:
Expression BuildExpr(Rule r, ParameterExpress...
Undefined behavior and sequence points
...er: that reason is concurrency. Unspecified order of elaboration is merely selection of one of several possible serial orderings, this is quite different to before and after orderings, because if there is no specified ordering, concurrent evaluation is possible: not so with the old rules. For exampl...
Multiple INSERT statements vs. single INSERT with multiple VALUES
...t
One place where this information is leveraged is shown by @Lieven here
SELECT *
FROM (VALUES ('Lieven1', 1),
('Lieven2', 2),
('Lieven3', 3))Test (name, ID)
ORDER BY name, 1/ (ID - ID)
Because at compile time it can determine that the Name column has no duplicates it...
How do I make a Git commit in the past?
... By the way, the '-0400' part speicfies the timezone offset. Be aware of selecting it properly...because if not, your time will change based on that. For example in the case of myself, who live in Chicago, i had to choose '-0600' (North America CST). You can find the codes in here: timeanddate.co...
Why is “except: pass” a bad programming practice?
....
Try to avoid passing in except blocks
When explicitly catching a small selection of specific exceptions, there are many situations in which we will be fine by simply doing nothing. In such cases, just having except SomeSpecificException: pass is just fine. Most of the time though, this is not th...
Cannot delete directory with Directory.Delete(path, true)
...e(path, true) while path or one of the folders/files under path is open or selected in Windows Explorer will throw an IOException. Closing Windows Explorer and rerunning my existing code w/o the try/catch suggested above worked fine.
– David Alpert
Feb 24 '10 ...
Alternative to google finance api [closed]
...ery Language)**
For example:
http://developer.yahoo.com/yql/console/?q=select%20*%20from%20yahoo.finance
.quotes%20where%20symbol%20in%20(%22YHOO%22%2C%22AAPL%22%2C%22GOOG%22%2C%22
MSFT%22)%0A%09%09&env=http%3A%2F%2Fdatatables.org%2Falltables.env
2. Use the webservice
For example, to get ...
Why is the gets function so dangerous that it should not be used?
...deal would have been to have a "string pointer" identify a byte that would select among a few different string/buffer/buffer-info formats, with one value of prefix byte indicating a struct that contained the prefix byte [plus padding], plus the buffer size, used size, and address of the actual text....
How to implement Rate It feature in Android App
...lay the pop up for 3 days and 10 launches. The same is done for those that selected to rate it, however the delays is longer (not to bother the user so soon in case that he has actually rated the app. This can be changed to not be shown again, then you will have to alter the code to your like). Hope...