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Vim: What's the difference between let and set?
...ple, this function uses let to assign the value in the global variable orig_tw to the textwidthoption:
" Toggle Autowrap
" Default of 72 but can be overridden by tw settings in other vimrc files
let g:orig_tw = 72
function Toggle_autowrap_mode()
if &textwidth == 0
" Must use let ins...
How can I drop all the tables in a PostgreSQL database?
...at this will not remove the system tables (such as those that begin with pg_) as they are in a different schema, pg_catalog.
– congusbongus
Aug 4 '14 at 7:07
38
...
Get the IP address of the machine
...ifAddrStruct);
for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) {
if (!ifa->ifa_addr) {
continue;
}
if (ifa->ifa_addr->sa_family == AF_INET) { // check it is IP4
// is a valid IP4 Address
tmpAddrPtr=&((struct ...
git remove merge commit from history
...re the branches have diverged, I see all the commits of the purple branch -_-
– Benjamin Toueg
Jul 10 '13 at 18:15
1
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Send email using the GMail SMTP server from a PHP page
...
// Pear Mail Library
require_once "Mail.php";
$from = '<fromaddress@gmail.com>';
$to = '<toaddress@yahoo.com>';
$subject = 'Hi!';
$body = "Hi,\n\nHow are you?";
$headers = array(
'From' => $from,
'To' => $to,
'Subject' =&...
What is the difference between “pom” type dependency with scope “import” and without “import”?
...lude> in <dependency> also. For example checkout this : jdbi.org/#_getting_started
– Nitiraj
Mar 21 '18 at 12:48
...
How Pony (ORM) does its tricks?
... if c.country == 'USA')
>>> import dis
>>> dis.dis(gen.gi_frame.f_code)
1 0 LOAD_FAST 0 (.0)
>> 3 FOR_ITER 26 (to 32)
6 STORE_FAST 1 (c)
9 LOAD_FAST 1 (c)
...
What's the difference of “./configure” option “--build”, “--host” and “--target”?
...et platforms .. you can get them here: gnu.org/software/gettext/manual/html_node/config_002eguess.html
– wirtsi
Jul 17 '19 at 15:11
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Difference between Destroy and Delete
...ary key, and no callbacks are executed.
To enforce the object's before_destroy and after_destroy callbacks or any :dependent association options, use #destroy.
ActiveRecord::Persistence.destroy
Deletes the record in the database and freezes this instance to reflect that no changes should b...
Link to reload current page
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<a href="<?php echo $_SERVER["REQUEST_URI"]; ?>">Click me</a>
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