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character showing up in files. How to remove them?
... You need to run with the -CSD switch, or with the PERL_UNICODE envariable set to SD, for that to work.
– tchrist
Sep 4 '11 at 18:24
...
Render HTML to an image
... wkhtmltoimage/pdf does support javascript rendering. You can set a javascript delay or let wkhtml check for a specifc window.status (which you can set with javascript when you know your js stuff is done)
– Daniel Z.
Apr 5 '18 at 9:16
...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
...ctionality in.
It's very simple, small and easy to use. Plus it has a DataSetHelper that lets you use DataSets and DataTables to easily work with Excel data.
ExcelLibrary seems to still only work for the older Excel format (.xls files), but may be adding support in the future for newer 2007/2010 f...
Why use prefixes on member variables in C++ classes
...ember and parameter
No confusion between index/iterator and items
Use of a set of clearly related variables (item list, pointer, and index) that avoid the many pitfalls of generic (vague) names like "count", "index".
Prefixes reduce typing (shorter, and work better with auto-completion) than alterna...
How to flush output of print function?
...print() function to flush without the need to use sys.stdout.flush(); just set the "flush" keyword argument to true. From the documentation:
print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False)
Print objects to the stream file, separated by sep and followed by end. sep, end and...
Difference between abstraction and encapsulation?
...s would require such complex program code that they would fail from the outset. Without abstraction, you couldn’t even write a program to print a number: the concept “print” involves countless abstractions (what’s a screen? what’s a character? what’s a pixel? …)
–...
Comment the interface, implementation or both?
...nterface only. Commenting both is duplication and it's likely that the two sets of comments will eventually get out of sync if the code changes. Comment the implementation with "implements MyInterface"... Things like Doxygen will generate docs that include the derived docs into the docs for the impl...
Creating a new user and password with Ansible
... password: $1$SomeSalt$UqddPX3r4kH3UL5jq5/ZI.
tasks:
- user: name=tset password={{password}}
If your playbook or ansible command line has your password as-is in plain text, this means your password hash recorded in your shadow file is wrong. That means when you try to authenticate with you...
How to ssh to vagrant without actually running “vagrant ssh”?
...
You could set the port on your own. Thus the script will be executable from any directory.
– Yser
Dec 15 '14 at 12:54
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How to use a switch case 'or' in PHP
... for a value, and run different pieces of code depending on which value is set.
Each possible option is given by a case in the switch statement.
Example :
switch($bar)
{
case 4:
echo "This is not the number you're looking for.\n";
$foo = 92;
}
(ii). Delimiting code blocks
T...