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Merging dictionaries in C#
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@Serge: I suggest you ask a new question with precise requirements.
– Jon Skeet
Nov 6 '18 at 16:32
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Difference between left join and right join in SQL Server [duplicate]
...ed completely interchangeable. Try however Table2 left join Table1 (or its identical pair, Table1 right join Table2) to see a difference. This query should give you more rows, since Table2 contains a row with an id which is not present in Table1.
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Download a specific tag with Git
...t to subversion in this respect. A svn tag basically copies the files to a new folder, so you can svn checkout a specific bunch of files, whereas git tags are simply pointers to specific revisions.
– dbr
Apr 27 '09 at 2:17
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Java Date cut off time information
...lendar is recommended. Sun/Oracle supplanted that class in Java 8 with the new java.time package. Use either that or Joda-Time.
– Basil Bourque
Jun 20 '14 at 17:26
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Relative URL to a different port number in a hyperlink?
...ever, if you hover your mouse over the link, it doesn't show the link with new port number included. It's not until you click on it that it adds the port number. Also, if the user right-clicks on the link and does "Copy Link Location", they get the unmodified URL without the port number. So this isn...
How to get nice formatting in the Rails console
...rom ruby-docs
In older Ruby versions, ie. <= 1.9, Syck is still provided, however it
was completely removed with the release of Ruby 2.0.0.
For rails 4/ruby 2 you could use just
puts object.to_yaml
share
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What does git rev-parse do?
...l = function(e) {
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
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How to change MySQL data directory?
...var/lib/mysql) using the following command:
sudo cp -R -p /var/lib/mysql /newpath
edit the MySQL configuration file with the following command:
sudo gedit /etc/mysql/my.cnf # or perhaps /etc/mysql/mysql.conf.d/mysqld.cnf
Look for the entry for datadir, and change the path (which should be /var...
When should I use nil and NULL in Objective-C?
...ly, they are exactly equal, you can send messages to both nil and to NULL. Idiomatically though nil is usually used to represent an object
– cobbal
Oct 14 '09 at 5:43
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Objective-C pass block as parameter
...g the * with a ^. One way to pass a block to a method is as follows:
- (void)iterateWidgets:(void (^)(id, int))iteratorBlock;
But as you can see, that's messy. You can instead use a typedef to make block types cleaner:
typedef void (^ IteratorBlock)(id, int);
And then pass that block to a meth...