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How do I trim leading/trailing whitespace in a standard way?
...st answer isn't good at all unless you don't care about memory leaks. You now have two overlapping strings (the original, which has it's trailing spaces trimmed, and the new one). Only the original string can be freed, but if you do, the second one points to freed memory.
– D...
What is the difference between google tag manager and google analytics?
... they used, which pages were the most popular, etc. The only way it can know this stuff is if you put a "tag" on all of your pages. The tag is the javascript code on your pages that runs on the visitor's browser, which tells Google Analytics' servers that they are visiting the page right now.
Th...
How many files can I put in a directory?
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Since we're in 2012 now, I think its time to make clear that ext4 doesn't have any limit concerning the number of subdirectories. Also maximum filesize grew to 16 TB. Furthermore, the overall size of the filesystem may be up to 1 EB = 1,048,576 ...
ruby inheritance vs mixins
... out the be the latter, module B, because you included it after module A. Now, it's easy to avoid this problem: make sure all of module A and module B's constants and methods are in unlikely namespaces. The problem is that the compiler doesn't warn you at all when collisions happen.
I argue that ...
Send attachments with PHP Mail()?
...he main script file -- require_once('path/to/file/class.phpmailer.php');
Now, sending emails with attachments goes from being insanely difficult to incredibly easy:
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
$email = new PHPMailer();
$email->SetFrom('you@example.com...
Why do we need a pure virtual destructor in C++?
...class Base
{
public:
Base();
virtual ~Base() = 0; // Pure virtual, now no one can create the Base Object directly
};
Base::Base() { cout << "Base Constructor" << endl; }
Base::~Base() { cout << "Base Destructor" << endl; }
class Derived : public Base
{
public:
...
Filter rows which contain a certain string
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option 1 is to know for sure that dplyr loaded last. option 2 is you prefix dplyr::filter.
– userJT
Mar 1 '16 at 14:30
...
Find all packages installed with easy_install/pip?
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As of version 1.3 of pip you can now use pip list
It has some useful options including the ability to show outdated packages. Here's the documentation: https://pip.pypa.io/en/latest/reference/pip_list/
...
What is the better API to Reading Excel sheets in java - JXL or Apache POI [closed]
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I have used both JXL (now "JExcel") and Apache POI. At first I used JXL, but now I use Apache POI.
First, here are the things where both APIs have the same end functionality:
Both are free
Cell styling: alignment, backgrounds (colors and patte...
Put current changes in a new Git branch [duplicate]
...diting some modules on the master branch but I haven't committed them. I'm now thinking that these changes should really be on an experimental branch and not the master branch.
...