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Catching multiple exception types in one catch block
...al/en/language.exceptions.php#example-287
RFC: https://wiki.php.net/rfc/multiple-catch
Commit: https://github.com/php/php-src/commit/0aed2cc2a440e7be17552cc669d71fdd24d1204a
For PHP before 7.1:
Despite what these other answers say, you can catch AError and BError in the same block (it is somew...
Return first match of Ruby regex
...
Is this not doing a match and returning the first result behind the scenes ?
– Gishu
Feb 6 '09 at 10:33
7
...
memcpy() vs memmove()
... the data (in order), copying from one location to the other. This can result in the source being overwritten while it's being read.
Memmove does more work to ensure it handles the overlap correctly.
EDIT:
(Unfortunately, I can't find decent examples, but these will do). Contrast the memcpy and m...
What do (lambda) function closures capture?
... Create a lambda with an extra argument, and set the extra argument's default value to the object you want preserved.
A little more verbose but less hacky would be to create a new scope each time you create the lambda:
>>> adders = [0,1,2,3]
>>> for i in [0,1,2,3]:
... adders[...
How to force garbage collection in Java?
... * This method guarantees that garbage collection is
* done unlike <code>{@link System#gc()}</code>
*/
public static void gc() {
Object obj = new Object();
WeakReference ref = new WeakReference<Object>(obj);
obj = null;
while(ref.get() != null) {
...
In C# what is the difference between a destructor and a Finalize method in a class?
...t the same time so having both a destructor and a Finalize method will result in an error (but you can, although not recommended, declare a public new void Finalize() method if you're not declaring a destructor).
share
...
demystify Flask app.secret_key
...ta can you recreate this value, letting Flask detect if anything has been altered without permission. Since the secret is never included with data Flask sends to the client, a client cannot tamper with session data and hope to produce a new, valid signature.
Flask uses the itsdangerous library to ...
Getting key with maximum value in dictionary?
...for k,v in d1.items()}
return d3[max(d3)]
def f3():
return list(filter(lambda t: t[1]==max(d1.values()), d1.items()))[0][0]
def f3b():
# same as f3 but remove the call to max from the lambda
m=max(d1.values())
return list(filter(lambda t: t[1]==m, d1.items()))[0][0] ...
What exactly are iterator, iterable, and iteration?
... @jlh it sounds like you are proposing a very opinionated dfeault behavior. Consider that {'a': 'hi', 'b': 'bye'} has length of 2, but cannot be indexed by 0, 1, or 2.
– shadowtalker
Sep 19 '18 at 16:05
...
How to find server name of SQL Server Management Studio
...nline with SQL Server service. If it says MSSQLSERVER, then it's the default instance. To connect to it in Management Studio, just type . (dot) OR (local) and click Connect. If the instance name is different, then use .\[instance name] to connect to it (for example if the instance name is SQL2008, ...