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How to initialise memory with new operator in C++?
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It's a surprisingly little-known feature of C++ (as evidenced by the fact that no-one has given this as an answer yet), but it actually has special syntax for value-initializing an array:
new int[10]();
Note that you must use the empty parentheses — ...
Enum type constraints in C# [duplicate]
...an the restrictions being removed from C# 5. (I assume C# 4 is locked down now.)
– Jon Skeet
Sep 10 '09 at 8:52
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How do I use regex in a SQLite query?
I'd like to use a regular expression in sqlite, but I don't know how.
17 Answers
17
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jQuery's .click - pass parameters to user function
...event){
alert(event.data.param1);
alert(event.data.param2);
}
I know it's late in the game for this question, but the previous answers led me to this solution, so I hope it helps someone sometime!
share
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Throw an error in a MySQL trigger
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DECLARE errorWithDate varchar(64);
select concat("[",DATE_FORMAT(now(),"%Y%m%d %T"),"] ", errorText) into errorWithDate;
INSERT IGNORE INTO mysql_error_generator(error_field) VALUES (errorWithDate);
INSERT INTO mysql_error_generator(error_field) VALUES (errorWithDate);
END;
$$
DELI...
Generating a random & unique 8 character string using MySQL
...no idea how many you could allocate before a collision (but it would be a known and constant value).
edit: This is now an old answer, but I saw it again with time on my hands, so, from observation...
Chance of all numbers = 2.35%
Chance of all letters = 0.05%
First collision when MD5(82945) = "7...
Difference between Python's Generators and Iterators
...mal function.
When a generator function is called, it returns an iterator known as a generator. That generator then controls the execution of a generator function.
So, in formal and precise usage, "generator" unqualified means generator object, not generator function.
The above references are for P...
.NET HashTable Vs Dictionary - Can the Dictionary be as fast?
...nsure you're getting the right value on lookups, ie how does the function know which element to return? In msdn.microsoft.com/en-us/library/ms379571%28VS.80%29.aspx it says,"Rather than reprobing in the event of a collision, as is done with the Hashtable class, the Dictionary simply chains any coll...
How do I use a PriorityQueue?
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@Neil Yes, I have made it more explicit in the answer now :)
– akhil_mittal
Apr 29 '19 at 5:50
1
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Google Guava vs. Apache Commons [closed]
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In my opinion the better choice is Guava (formerly known as Google collections):
it's more modern (has generics)
it absolutely follows the Collections API requirements
it's actively maintained
CacheBuilder and it's predecessor MapMaker are just plain awesome
Apache Commons...