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Best way to store time (hh:mm) in a database
...plore you to use two DATETIME values instead, labelled something like event_start and event_end.
Time is a complex business
Most of the world has now adopted the denery based metric system for most measurements, rightly or wrongly. This is good overall, because at least we can all agree that a g,...
How can I discover the “path” of an embedded resource?
... as the root Dir for my embedded http server?
– lazzy_ms
Aug 2 '18 at 8:44
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Are there any downsides to passing structs by value in C, rather than passing a pointer?
...to dig deep into the assembly land:
(The following example uses gcc on x86_64. Anyone is welcome to add other architectures like MSVC, ARM, etc.)
Let's have our example program:
// foo.c
typedef struct
{
double x, y;
} point;
void give_two_doubles(double * x, double * y)
{
*x = 1.0;
...
Node.js: How to send headers with form data using request module?
...ned is not a valid uri or options object. at request (C:\Users\pjt\node_modules\request\index.js:44:11) at Request._callback (C:\Users\pjt\routes\payment.js:170:11) at Request.self.callback (C:\Users\pjt\node_modules\request\request.js:186:22) at emitTwo (events.js:106:13) at Req...
Creating range in JavaScript - strange syntax
...provide a this argument ourselves, it defaults to window. Take note of the order in which the arguments are provided to our callback, and let's weird it up all the way to 11 again:
arr.forEach(log.call, log);
//'a', [0, ['a', 'b', 'c']]
//'b', [1, ['a', 'b', 'c']]
//'b', [2, ['a', 'b', 'c']]
// ^ ...
Summarizing multiple columns with dplyr? [duplicate]
...
The dplyr package contains summarise_all for this aim:
library(dplyr)
df %>% group_by(grp) %>% summarise_all(list(mean))
#> # A tibble: 3 x 5
#> grp a b c d
#> <int> <dbl> <dbl> <dbl> <dbl>
#>...
How can I list ALL DNS records?
... specific nameserver: dig -x example.com
#!/bin/bash
set -e; set -u
COMMON_SUBDOMAINS="www mail mx a.mx smtp pop imap blog en ftp ssh login"
EXTENDED=""
while :; do case "$1" in
--) shift; break ;;
-x) EXTENDED=y; shift ;;
-s) NS="$2"; shift 2 ;;
*) break ;;
esac; done
DOM="$1"; shift
TYPE...
How do you overcome the HTML form nesting limitation?
...ete correspond to different actions on the resource: "Save" -> POST /my_resource (creating a new resource) "Save" -> PUT /my_resource (modifying an existing resource) "Delete" -> DELETE /my_resource (destroy the resource) RESTfully speaking, the problem is that a POST is expected to...
Understanding MongoDB BSON Document size limit
... including the subdocuments, nested objects etc.
So a document of:
{
_id:{},
na: [1,2,3],
naa: [
{w:1,v:2,b:[1,2,3]},
{w:5,b:2,h:[{d:5,g:7},{}]}
]
}
Has a maximum size of 16meg.
Sbudocuments and nested objects are all counted towards the size of the document.
...
Changing the status bar text color in splash screen iOS 7
..., UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UIApplication.shared.statusBarView?.backgroundColor = UIColor.red
return true
...