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Remove elements from collection while iterating
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Let me give a few examples with some alternatives to avoid a ConcurrentModificationException.
Suppose we have the following collection of books
List<Book> books = new ArrayList<Book>();
books.add(new Book(new ISBN("0-201-63361-2")));
books.add(new Book(new ISBN("0-201-63361-3")));
boo...
How to sort the result from string_agg()
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If this syntax gives you syntax errors, check your compatibility level: stackoverflow.com/questions/43611024/…
– Mr. TA
Jul 13 at 13:32
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Apache Proxy: No protocol handler was valid
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This can happen if you don't have mod_proxy_http enabled
sudo a2enmod proxy_http
For me to get my https based load balancer working, i had to enable the following:
sudo a2enmod ssl
sudo a2enmod proxy
sudo a2enmod proxy_balancer
sudo a2en...
How to split a delimited string into an array in awk?
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@Mohamed Saligh, if you're on Solaris, you need to use /usr/xpg4/bin/awk, given the string length.
– Dimitre Radoulov
Nov 4 '11 at 13:54
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Retrieve the maximum length of a VARCHAR column in SQL Server
I want to find the longest VARCHAR in a specific column of a SQL Server table.
10 Answers
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What is the difference between t.belongs_to and t.references in rails?
What is the difference between t.references and t.belongs_to ?
Why are we having those two different words? It seems to me they do the same thing?
Tried some Google search, but find no explanation.
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Design Patterns: Abstract Factory vs Factory Method
...ct Factory
Produces a Family of Types that are related. It is noticeably different than a Factory Method as it has more than one method of types it produces. (This is complicated refer to next diagram for better real-life example).
Example From The .NET Framework
DbFactoriesProvider is a Simple...
Is there shorthand for returning a default value if None in Python? [duplicate]
In C#, I can say x ?? "" , which will give me x if x is not null, and the empty string if x is null. I've found it useful for working with databases.
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QString to char* conversion
...is statement, so the result pointer probably does not have a valid address if you use it in a subsequent statement.
– RicoRico
Mar 6 '16 at 12:32
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CSS Properties: Display vs. Visibility
What is difference between Display vs. Visibility properties?
4 Answers
4
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