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How do pointer to pointers work in C?
...like the lockless name lookup, but simply good use of pointers-to-pointers etc.
For example, I've seen too many people who delete a singly-linked list entry by keeping track of the "prev" entry, and then to delete the entry, doing something like:
if (prev)
prev->next = entry->next;
...
Difference between JVM and HotSpot?
...n of HotSpot (and many other pieces of the JDK e.g compiler, APIs, tools, etc) is developed.
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window.location.reload with clear cache [duplicate]
...
UPDATE 1
After reading the comments I realize you wanted to programmatically erase the cache and not every time. What you could do is have a function in JS like:
eraseCache(){
window.location = window.location.href+'?eraseCache=true';
}
Then, in PHP let's say, you do something like this:
&l...
What is the difference between & vs @ and = in angularJS
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@ allows a value defined on the directive attribute to be passed to the directive's isolate scope. The value could be a simple string value (myattr="hello") or it could be an AngularJS interpolated string with embedded expressi...
Unix command to prepend text to a file
... Note that '\n' only works for GNU sed, not BSD (such as OSX, FreeBSD, etc.). To be more portable with those, see: stackoverflow.com/questions/1421478/…
– jwd
Jun 27 '17 at 23:19
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Is a view faster than a simple query?
...es.
Update: At least three people have voted me down on this one. With all due respect, I think that they are just wrong; Microsoft's own documentation makes it very clear that Views can improve performance.
First, simple views are expanded in place and so do not directly contribute to performa...
How to save and restore multiple different sessions in Vim?
...
function! MakeSession()
let b:sessiondir = $HOME . "/.vim/sessions" . getcwd()
if (filewritable(b:sessiondir) != 2)
exe 'silent !mkdir -p ' b:sessiondir
redraw!
endif
let b:filename = b:sessiondir . '/session.vim'
exe "mksession! " . b:filename
endfunction
function! LoadSession(...
Comparing Dates in Oracle SQL
...; to_date('31-DEC-95','DD-MON-YY')
This method has a few unnecessary pitfalls
As a_horse_with_no_name noted in the comments, DEC, doesn't necessarily mean December. It depends on your NLS_DATE_LANGUAGE and NLS_DATE_FORMAT settings. To ensure that your comparison with work in any locale you can u...
What and where are the stack and heap?
... the processor translates to physical addresses and there are page faults, etc. They keep track of what pages belong to which applications. You never really need to worry about this, though, because you just use whatever method your programming language uses to allocate and free memory, and check ...
PHP MySQL Google Chart JSON - Complete Example
...mpout'],
<?php
while($row = mysqli_fetch_assoc($aresult)){
echo "['".$row["Date_time"]."', ".$row["Tempout"]."],";
}
?>
]);
var options = {
title: 'Date_t...