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c++ - What does (~0L) mean? - Stack Overflow I'm doing some X11 ctypes coding, I don't know C but need some help understanding this In the C code below (might be C++ im not sure) we see (~0L) what does that mean? In Javascript and Python ~0
c - why is *pp [0] equal to **pp - Stack Overflow So pp [0] points to the address of p, which is 0x2000, and by dereferencing I would expect to get the contents of address 0x2000 That's were your reasoning strays, but understandably so In C, the right hand side of an assignment, or generally an evaluation of an lvalue (vulgo: variable), more precisely an lvalue-to-rvalue conversion, is already a dereferencing! For example, int i, j=0; i=j
html - When to use lt;p gt; vs. lt;br gt; - Stack Overflow 14 You want to use the <p> tag when you need to break up two streams of information into separate thoughts <p> Now is the time for all good men to come to the aid of their country < p> <p>The quick brown fox jumped over the lazy sleeping dog < p> The <br > tag is used as a forced line break within the text flow of the web page
xml - Regular expression \p {L} and \p {N} - Stack Overflow 280 \p{L} matches a single code point in the category "letter" \p{N} matches any kind of numeric character in any script Source: regular-expressions info If you're going to work with regular expressions a lot, I'd suggest bookmarking that site, it's very useful
c++ - Where is `%p` useful with printf? - Stack Overflow %p will also use an adequate textural representation for pointer for the platform On platforms where it is common to represent pointer in hex, this won't make a difference as long as the size is correct but for a segmented architecture (do you remember DOS?) it may use a segment:offset representation
ssh - Cant connect to Postgresql on port 5432 - Stack Overflow I have PostgreSQL 9 3 installed on a server running Ubuntu Server 14 04 If I ssh into the server via terminal, I'm able to connect with psql But when I try to configure pgAdmin III to do the rem
html - When to use lt;span gt; instead lt;p gt;? - Stack Overflow The <p> tag is a p aragraph, and as such, it is a block element (as is, for instance, h1 and div), whereas span is an inline element (as, for instance, b and a) Block elements by default create some whitespace above and below themselves, and nothing can be aligned next to them, unless you set a float attribute to them Inline elements deal with spans of text inside a paragraph They typically