Open Graph is a standard for metadata that extends the normal information contained within a site's head markup. This enables websites such as Facebook to display deeper and richer information about a website in a structured format. This information is then automatically displayed when users share l...
Split vector of texts using one pattern:
stri_split_fixed(c("To be or not to be.", "This is very short sentence.")," ")
# [[1]]
# [1] "To" "be" "or" "not" "to" "be."
#
# [[2]]
# [1] "This" ...
CoffeeScript allows to deconstruct objects and arrays when they are fed to functions as arguments.
A function that leverages deconstruction will specify in its signature all the fields that are expected within its body. When invoking such function, an object or array containing all the expected fie...
$conn = sqlsrv_connect($dbServer, $connectionInfo);
$query = "SELECT * FROM [users] WHERE [name] = ? AND [password] = ?";
$params = array("joebloggs", "pa55w0rd");
$stmt = sqlsrv_query($conn, $query, $params);
If you plan on using the same query statement more...
When a query goes wrong, it is important to fetch the error message(s) returned by the driver to identify the cause of the problem. The syntax is:
sqlsrv_errors([int $errorsOrWarnings]);
This returns an array with:
KeyDescriptionSQLSTATEThe state that the SQL Server / OBDC Driver is incodeThe S...
if(A_TimeIdlePhysical > 60000) { ; 60,000 milliseconds
WinClose, ahk_class Chrome_WidgetWin_1
MsgBox, Google Chrome was closed due to user inactivity.
}
This check could be done periodically, e.g. using SetTimer.
Comments in Tcl are best thought of as another command.
A comment consists of a # followed by any number of characters up to the next newline. A comment can appear wherever a command can be placed.
# this is a valid comment
proc hello { } {
# the next comment needs the ; before it to indicat...
Due to the way the Tcl language parser works, braces in the code must be properly matched. This includes the braces in comments.
proc hw {} {
# this { code will fail
puts {hello world}
}
A missing close-brace: possible unbalanced brace in comment error will be thrown.
proc hw {} {
...
You can use the following code for going back and forward.
if (!function_exists('mb_internal_encoding')) {
function mb_internal_encoding($encoding = NULL) {
return ($from_encoding === NULL) ? iconv_get_encoding() : iconv_set_encoding($encoding);
}
}
if (!function_exists('mb_c...
Each resource directory under the res folder (listed in the example above) can have different variations of the contained resources in similarly named directory suffixed with different qualifier-values for each configuration-type.
Example of variations of `` directory with different qualifier value...
Named slots work similarly to single slots but instead allow you to distribute content to different regions within your child component template.
Take the page component from the previous example but modify it's template so it is as follows:
<html>
<head>
<title>Pag...
The variable command ensures that a given namespace variable is created. Until a value is assigned to it, the variable's value is undefined:
namespace eval mynamespace {
variable alpha
set alpha 0
}
The variable can be accessed from outside the namespace (from anywhere, in fact) by at...
String#to_time
Converts a string to a Time value. The form parameter can be either :utc or :local, defaults to :local.
"13-12-2012".to_time # => 2012-12-13 00:00:00 +0100
"06:12".to_time # => 2012-12-13 06:12:00 +0100
"2012-12-13 06...
When this program
#include <stdio.h>
#include <string.h>
int main(void) {
int num = 0;
char str[128], *lf;
scanf("%d", &num);
fgets(str, sizeof(str), stdin);
if ((lf = strchr(str, '\n')) != NULL) *lf = '\0';
printf("%d \"%s\&...
The entries() method returns a new Array Iterator object that contains the key/value pairs for each index in the array.
6
var letters = ['a','b','c'];
for(const[index,element] of letters.entries()){
console.log(index,element);
}
result
0 "a"
1 "b"
2 "c"...
Most of the time you need to import namespaces in your XAML file. How this is done is different for the different XAML variants.
For Windows Phone, Silverlight, WPF use the clr-namespace syntax:
<Window ... xmlns:internal="clr-namespace:rootnamespace.namespace"
xmlns:exte...
By default, Android will display Toast messages at the bottom of the screen even if the keyboard is showing. This will show a Toast message just above the keyboard.
public void showMessage(final String message, final int length) {
View root = findViewById(android.R.id.content);
Toast toas...
Currently it contains rules for following libraries:-
ButterKnife
RxJava
Android Support Library
Android Design Support Library
Retrofit
Gson and Jackson
Otto
Crashlitycs
Picasso
Volley
OkHttp3
Parcelable
#Butterknife
-keep class butterknife.** { *; }
-keepnames class * { @butterk...
