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How would I skip optional arguments in a function call?
...llowing:
function getData($name, $limit = '50', $page = '1') {
return "Select * FROM books WHERE name = $name AND page = $page limit $limit";
}
echo getData('some name', '', '23'); // won't work as expected
The output will be:
"Select * FROM books WHERE name = some name AND page = 23 limit"
...
Eclipse error “ADB server didn't ACK, failed to start daemon”
...Step 1:
CTRL+Shift+Esc to open the task manager, which has adb.exe process and end (kill) that process
Step 2:
Now, close the eclipse, which is currently running on my computer.
Step 3:
Again, restart eclipse then solved that problem.
For those using OS X
killall adb
For those using Windows
...
When to use single quotes, double quotes, and backticks in MySQL
...ng query will produce different results (or errors) depending on SQL mode:
SELECT "column" FROM table WHERE foo = "bar"
ANSI_QUOTES disabled
The query will select the string literal "column" where column foo is equal to string "bar"
ANSI_QUOTES enabled
The query will select the column column where ...
Nearest neighbors in high-dimensional data?
...
First, the number of features (columns) in a data set is not a factor in selecting a distance metric for use in kNN. There are quite a few published studies directed to precisely this question, and the usual bases for comparison are:
the underlying statistical
distribution of your data;
the rel...
How to change Vagrant 'default' machine name?
Where does the name 'default' come from when launching a vagrant box?
7 Answers
7
...
How should I structure a Python package that contains Cython code
...Here is a cut-down version of setup.py which I hope shows the essentials:
from distutils.core import setup
from distutils.extension import Extension
try:
from Cython.Distutils import build_ext
except ImportError:
use_cython = False
else:
use_cython = True
cmdclass = {}
ext_modules = [...
Which is the correct C# infinite loop, for (;;) or while (true)? [closed]
...
while(true)
{
}
Is always what I've used and what I've seen others use for a loop that has to be broken manually.
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When NOT to call super() method when overriding?
...
For those who also wondered which overridden methods from Android Framework should call super and found this question - here's a current hint from 2019 - Android Studio 3+ will tell you when you need it.
...
Smallest data URI image possible for a transparent image
...file can actually contain multiple “images” within it, which keeps you from having to specify image data for parts of the image which have the same color as the background color. Each image block has a position and size within the overall image size. In the above file, the position is 0,0 and th...
Distinct by property of class with LINQ [duplicate]
...p:
List<Car> distinct =
cars
.GroupBy(car => car.CarCode)
.Select(g => g.First())
.ToList();
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