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Java Try Catch Finally blocks without Catch
...g();
try { useResource( r); }
finally { r.release(); } // close, destroy, etc
"Finally", one more tip: if you do bother to put in a catch, either catch specific (expected) throwable subclasses, or just catch "Throwable", not "Exception", for a general catch-all error trap. Too many problems, su...
Does delete on a pointer to a subclass call the base class destructor?
...e to be used) where I did not use it.
auto_ptr, unique_ptr and shared_ptr etc... are great for making this lifetime management much easier:
class A
{
shared_array<char> someHeapMemory;
public:
A() : someHeapMemory(new char[1000]) {}
~A() { } // someHeapMemory is delete[]d automat...
Meaning of = delete after function declaration
...den function to be visibly declared and considered for overload resolution etc., so that it can fail as early as possible and provide the clearest error to the user. Any solution which involves "hiding" the declaration reduces this effect.
– Leushenko
Feb 26 '1...
How can I round a number in JavaScript? .toFixed() returns a string?
... 1e2;
someNumber === 42.01;
// if you need 3 digits, replace 1e2 with 1e3 etc.
// or just copypaste this function to your code:
function toFixedNumber(num, digits, base){
var pow = Math.pow(base||10, digits);
return Math.round(num*pow) / pow;
}
.
Or if you want a “native-like” function,...
How do I copy a file in Python?
...━━━━━━━━━━━
Example:
import shutil
shutil.copy('/etc/hostname', '/var/tmp/testhostname')
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Have a reloadData for a UITableView animate when changing
...mationKey"];
Change the type to match your needs, like kCATransitionFade etc.
Implementation in Swift:
let transition = CATransition()
transition.type = kCATransitionPush
transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
transition.fillMode = kCAFillMod...
Sockets: Discover port availability using Java
... tests whether it is in LISTEN state, whether the IP address is reachable, etc.
– Marquis of Lorne
Jul 27 '15 at 22:55
1
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how to detect search engine bots with php?
...n set the user-agent to what they want, looking for 'Googlebot', 'bingbot' etc is only half the job.
The 2nd part is verifying the client's IP. In the old days this required maintaining IP lists. All the lists you find online are outdated. The top search engines officially support verification thro...
What's the difference between %s and %d in Python string formatting?
...
what do you call these %s, %d, etc?
– Chaine
May 19 '17 at 18:21
1
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How to remove “Server name” items from history of SQL Server Management Studio
...onnect Object Explorer, Object Explorer-> Connect-> Database Engine, etc).
Click on the Server Name field drop down list’s down arrow.
Hover over the items you want to remove.
Press the delete (DEL) key on your keyboard.
there we go.
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