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Pointer expressions: *ptr++, *++ptr and ++*ptr
... before the second printf() happens, i will have been incremented as a result of the ++ operator in the first printf(). This, by the way, is one of the few guarantees the standard gives about the timing of side effects.
In your code, then, when the expression *p++is evaluated, it evaluates to 'H'....
How to format strings in Java
...his:
String formatString = "there were {0} {0,choice,0#objects|1#object|1<objects}";
MessageFormat fmt = new MessageFormat(formatString);
fmt.format(new Object[] { new Long(numberOfObjects) });
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Is there a “do … until” in Python? [duplicate]
... I also like this because it is more readable than some of the other alternatives
– Stephen Ellwood
Jul 18 '19 at 18:55
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How to configure MongoDB Java driver MongoOptions for production use?
...emaphores to get db
connection" error and by increasing the connections/multiplier I was able to solve that problem. I'm looking for links to or your best practices in configuring these options for production.
...
Why / when would it be appropriate to override ToString?
...o this is very useful in MVC or ASP.Net development where @yourObject and <%=yourObject%> are going to be "ToString-ed".
– Ben Lesh
Apr 23 '12 at 14:23
4
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Understanding checked vs unchecked exceptions in Java
...ception sqle) {
throw new LoginFailureException("Cannot login!!"); //<-- Eat away original root cause, thus obscuring underlying problem.
}
Instead do following:
try {
attemptLogin(userCredentials);
} catch (SQLException sqle) {
throw new LoginFailureException(sqle); //<-- Wr...
Standard alternative to GCC's ##__VA_ARGS__ trick?
...nt way to implement the second BAR() example in jwd's question:
#include <stdio.h>
#define BAR(...) printf(FIRST(__VA_ARGS__) "\n" REST(__VA_ARGS__))
/* expands to the first argument */
#define FIRST(...) FIRST_HELPER(__VA_ARGS__, throwaway)
#define FIRST_HELPER(first, ...) first
/*
* if ...
PHP - concatenate or directly insert variables in string
...iable interpolation), which I find easier to both write and read.
The result will be the same; and even if there are performance implications, those won't matter 1.
As a sidenote, so my answer is a bit more complete: the day you'll want to do something like this:
echo "Welcome $names!";
PHP wi...
Swift and mutating struct
...fy states.
And then, you may have a question of why immutable is the default? That's because it's very hard to predict the future state of mutating values, and that usually becomes the main source of headaches and bugs. Many people agreed that the solution is avoiding mutable stuffs, and then immut...
Store pictures as files or in the database for a web app?
... to improve performance.
It will reduce database bottleneck.
The database ultimately stores its data on the file system.
Images can be easily cached when stored on the file system.
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