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How do I insert a linebreak where the cursor is without entering into insert mode in Vim?
...ink) the author requested. When I tested it, vi automatically removed the extra spaces for me; use 'x' to delete them if yours doesn't. And why do vi commands look like modem line noise? :-)
– Adam Liss
Oct 26 '08 at 3:51
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How to select a single field for all documents in a MongoDB collection?
... include several fields. In the following operation, find() method returns all documents that match the query. In the result set, only the item and qty fields and, by default, the _id field return in the matching documents.
db.inventory.find( { type: 'food' }, { item: 1, qty: 1 } )
In this example ...
What is compiler, linker, loader?
...y; program and data stack are created, register gets initialized.
Little Extra info :- http://www.geeksforgeeks.org/memory-layout-of-c-program/ , you can see the memory layout over there.
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Getting the folder name from a path
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I would probably use something like:
string path = "C:/folder1/folder2/file.txt";
string lastFolderName = Path.GetFileName( Path.GetDirectoryName( path ) );
The inner call to GetDirectoryName will return the full path, while the outer call to GetFileName() wil...
Is “IF” expensive?
...t it doesn't need once the outcome of the branch is known. This saves the extra memory access of a typical architecture in the event that it branches along the unpredicted path.
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What is the __del__ method, How to call it?
...is used, probably not like that: obj1.del() . So, my questions is how to call the __del__ method?
5 Answers
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How can I check if a directory exists in a Bash shell script?
...e variable, like if [ -d "${THING:+$THING/}" ]. A directory won't mind the extra slash. A file will evaluate to false. Empty will remain empty, so false. And a symlink will be resolved to its destination. Of course, it depends on your goal. If you want to go there, this is fine. If you want to delet...
What is the difference between native code, machine code and assembly code?
...ase configuration with JIT optimization enabled:
static void Main(string[] args) {
Console.WriteLine("Hello world");
00000000 55 push ebp ; save stack frame pointer
00000001 8B EC mov ebp,esp ...
How does Facebook Sharer select Images and other metadata when sharing my URL?
...the http://www.facebook.com/sharer.php does not use meta tags. It uses the string you pass. See below.
http://www.facebook.com/sharer.php?s=100&p[title]=THIS IS MY TITLE&p[summary]=THIS IS MY SUMMARY&p[url]=http://www.MYURL.com&&p[images][0]=http://www.MYURL.com/img/IMAGEADDRESS...
HTML text input field with currency symbol
...th content: '$' on inputs and adding an absolutely positioned element adds extra html - I like do to a background SVG inline css.
It goes something like this:
input {
width: 85px;
background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' version='1.1' heigh...