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Map Tiling Algorithm
...s that there in total are 12 different cases we must distinguish between.
Now, looking at one edge tile we can determine which way the boundary turns by looking at its four closest neighbour tiles. Marking an edge tile with X just as above we have the following six different cases.
These cases a...
How to convert a std::string to const char* or char*?
...
As of C++17, std::string::data() now returns a CharT* instead of a const CharT*. It might be a good idea to update this answer :)
– Rakete1111
Mar 31 '17 at 12:06
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Converting a UNIX Timestamp to Formatted Date String
...eTime();
To create a DateTime object from a specific timestamp (i.e. not now)
$currentTime = DateTime::createFromFormat( 'U', $timestamp );
To get a formatted string you can then call
$formattedString = $currentTime->format( 'c' );
See the manual page here
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CROSS JOIN vs INNER JOIN in SQL
...My comments point out that the diagrams are hard to interpret even if one knows what they are trying to say and are inappropriate for this topic. By "key" (of Figure 2 or 1) I meant "explanation of what the parts of a diagram mean". By "write it" I mean try for yourself to write very clearly what th...
Django dynamic model fields
....create(value='unkown')
ynu = EnumGroup.objects.create(name='Yes / No / Unknown')
ynu.enums.add(self.yes)
ynu.enums.add(self.no)
ynu.enums.add(self.unkown)
Attribute.objects.create(name='fever', datatype=Attribute.TYPE_ENUM,\
enum_group=ynu)
# When you regist...
Where are my postgres *.conf files?
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And if you don't know, you can access the command line utility via $YOUR_PG_INSTALL_DIR/pgsql/bin/psql
– yellavon
Dec 20 '12 at 20:22
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Put buttons at bottom of screen with LinearLayout?
...1". With this your LinearLayout will occupy the height left on the screen; now you can set the gravity of your Buttons to bottom.
– Ahmad
Feb 8 '13 at 19:18
1
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:: (double colon) operator in Java 8
...urned by some method and we want to sort the employees by their grade. We know we can make use of anonymous class as:
List<Employee> employeeList = getDummyEmployees();
// Using anonymous class
employeeList.sort(new Comparator<Employee>() {
@Override
p...
What does f+++++++++ mean in rsync logs?
... a "+", (2) an identical item replaces the dots with spaces, and (3) an unknown attribute replaces each letter with a "?" (this can happen when talking to an older rsync).
The attribute that is associated with each letter is as follows:
A c means either that a regular file has a different checksu...
Ignoring directories in Git repositories on Windows
... name of the file to .gitignore:
ren "New Text Document.txt" .gitignore
Now open the file with your favorite text editor and add the file/folder names you wish you ignore. You can also use wildcards like this: *.txt.
shar...