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Reference: Comparing PHP's print and echo
...non-zero values (positive and negative) are truthy values and this derives from PHP's Perl legacy.
But, if this is the case, then one may wonder why echo take multiple arguments whereas print can only handle one. For this answer we need to turn to the parser, specifically the file zend_language_...
How do I make my GUI behave well when Windows font scaling is greater than 100%
...file was last saved.
const
SmallFontsPixelsPerInch = 96;
function ScaleFromSmallFontsDimension(const X: Integer): Integer;
begin
Result := MulDiv(X, Screen.PixelsPerInch, SmallFontsPixelsPerInch);
end;
So, continuing the theme, another thing to be wary of is that if your project is developed...
How to trace the path in a Breadth-First Search?
...ue
queue.append([start])
while queue:
# get the first path from the queue
path = queue.pop(0)
# get the last node from the path
node = path[-1]
# path found
if node == end:
return path
# enumerate all adjacent nodes, constru...
When should we call System.exit in Java
...lease other resources. If there are no other non-daemon threads, returning from main will shut down the JVM and will call the shutdown hooks.
For some reason shutdown hooks seem to be an undervalued and misunderstood mechanism, and people are reinventing the wheel with all kind of proprietary custo...
How to run test cases in a specified file?
...he what's logged when testing it's worth mentioning the -v (verbose) flag. From the docs -v Verbose output: log all tests as they are run. Also print all text from Log and Logf calls even if the test succeeds.
– robstarbuck
Mar 1 '18 at 22:28
...
Is there a good tutorial on MSBuild scripts? [closed]
...ct, and I need to create a build script; a build script that I can trigger from my cruisecontrol server. Since nant has not been maintained for ages, I figure that MSBuild is the way to go.
...
How to count the frequency of the elements in an unordered list?
...
Note: You should sort the list before using groupby.
You can use groupby from itertools package if the list is an ordered list.
a = [1,1,1,1,2,2,2,2,3,3,4,5,5]
from itertools import groupby
[len(list(group)) for key, group in groupby(a)]
Output:
[4, 4, 2, 1, 2]
...
Histogram Matplotlib
...tlib solution to histograms, because the simple histogram_demo was removed from the matplotlib example gallery page.
Here is a solution, which doesn't require numpy to be imported. I only import numpy to generate the data x to be plotted. It relies on the function hist instead of the function bar a...
psql: FATAL: role “postgres” does not exist
...
NOTE: If you installed postgres using homebrew, see the comment from @user3402754 below.
Note that the error message does NOT talk about a missing database, it talks about a missing role. Later in the login process it might also stumble over the missing database.
But the first step is ...
How to access the GET parameters after “?” in Express?
...
Mind that req.params is different from req.query! expressjs.com/en/api.html#req.params expressjs.com/en/api.html#req.query @adelriosantiago
– caesarsol
Jan 14 '19 at 11:28
...