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How can I check if a View exists in a Database?
...oc msdn.microsoft.com/en-us/library/ms190328.aspx - and this one gives you all the object types : msdn.microsoft.com/en-us/library/ms190324.aspx
– Simon_Weaver
May 26 '16 at 7:04
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Difference between null and empty (“”) Java String
... String("");
System.out.println(a==b);
That would output false because I allocated two different objects, and a and b point to different objects.
However, a.equals(b) in this case would return true, because equals for Strings will return true if and only if the argument String is not null and rep...
How does Spring Data JPA differ from Hibernate for large projects?
...a magic that helps with complex queries. It is strange at first and you totally skip it in the docs but it is really powerful and useful.
It involves creating a custom Repository and a custom `RepositoryImpl' and telling Spring where to find it. Here is an example:
Configuration class - point to y...
How can I toggle word wrap in Visual Studio?
...rd Wrap (Ctrl+E, Ctrl+W)
General settings: Tools / Options / Text Editor / All Languages / Word wrap
Or search for 'word wrap' in the Quick Launch box.
Known issues:
If you're familiar with word wrap in Notepad++, Sublime Text, or Visual Studio Code, be aware of the following issues where Visual S...
2D cross-platform game engine for Android and iOS? [closed]
... found it's 2D part with OnGUI() or GUITextures too clumsy. Also, even a smallest game done on Unity3d is at least 10MB download which is just too much for a 2D game.
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Modern way to filter STL container?
...and if it returns true it copies the value to bar.
The std::back_inserter allows us to actually insert new elements at the end of bar (using push_back()) with an iterator without having to resize it to the required size first.
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In Ruby, is there an Array method that combines 'select' and 'map'?
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I usually use map and compact together along with my selection criteria as a postfix if. compact gets rid of the nils.
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}
=> [3, 3, 3, nil, nil, nil]
jruby-1.5.0 > [1...
How to avoid null checking in Java?
...ts they are participating in and defensively overcheck for nulls. Additionally, when writing their own code, they tend to rely on returning nulls to indicate something thus requiring the caller to check for nulls.
To put this another way, there are two instances where null checking comes up:
Whe...
How to nicely format floating numbers to String without unnecessary decimal 0?
...signed int, which I took to mean that int was acceptable (unsigned not actually existing in Java, and no exemplar was problematic), but changing int to long is a trivial fix if the situation is different.
– JasonD
Feb 3 '14 at 14:26
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Check if database exists in PostgreSQL using shell
...s
(4 rows)
Using the naive approach means that searching for a database called "List, "Access" or "rows" will succeed. So we pipe this output through a bunch of built-in command line tools to only search in the first column.
The -t flag removes headers and footers:
my_db | my_user | UTF...