new Vue({
el:"#app",
data:{
foo: "bar"
},
methods:{
// This is wrong! Arrow functions capture "this" lexically
// and "this" will refer to the window.
doSomething: () => this.foo = "baz"
}
})
Copying files
copy copies the source file in the first argument to the destination in the second argument. The resolved destination needs to be in a directory that is already created.
if (copy('test.txt', 'dest.txt')) {
echo 'File has been copied successfully';
} else {
echo 'Failed to ...
Gates are closures that determine if a user is allowed to perform a certain action on a resource. Gates are typically defined in the boot method of AuthServiceProvider and succinctly named to reflect what it's doing. An example of a gate that allows only premium users to view some content will look ...
To use the example above on a blade template to hide content from the user, you would typically do something like this:
@can('view-content', $content)
<! -- content here -->
@endcan
To completely prevent navigation to the content, you can do the following in your controller:
if(Gate::a...
Via The User model
The Laravel User model contains two methods that help with authorisations using Policies; can and can't. These two can be used to determine if a user has authorisation or not on a model respectively.
To check if a user can view a content or not, you can do the following:
if($us...
In the following, weight is declared as a mutable field.
type person = {
name: string;
mutable weight: int
};;
Remark: As far as design is concerned here, one would consider the fact that a person's name isn't likely to change, but their weight is.
More information needed.
A cryptographic hash function is a member of a class of functions with three vital properties; consistency, uniqueness, and irreversibility.
Consistency: Given the same data, a hash function will always return the same value. That is, if X = Y, f(x) will always equal f(y) ...
This example uses Icarus and GTKWave. Installation instructions for those tools on OSx are provided elsewhere on this page.
Lets begin with the module design. This module is a BCD to 7 segment display. I have coded the design in an obtuse way simply to give us something that is easily broken and...
First of all you'll need to have a key pair. If you don't have one yet, take a look at the 'Generate public and private key topic'.
Your key pair is composed by a private key (id_rsa) and a public key (id_rsa.pub). All you need to do is to copy the public key to the remote host and add its contents...
tf.gather_nd is an extension of tf.gather in the sense that it allows you to not only access the 1st dimension of a tensor, but potentially all of them.
Arguments:
params: a Tensor of rank P representing the tensor we want to index into
indices: a Tensor of rank Q representing the indices into ...
There are some situations where you won't be sure what type a variable is when it is returned from a function. You can always check a variable's type by using var.(type) if you are unsure what type it is:
x := someFunction() // Some value of an unknown type is stored in x now
switch x := x.(type...
/* these IN and OUT filerefs can point to anything */
filename in "anyfilehere.xlsx";
filename out "anyfilehere.xlsx";
/* copy the file byte-for-byte */
data _null_;
length filein 8 fileid 8;
filein = fopen('in','I',1,'B');
fileid = fopen('out','O',1,'B');
...
Filename myEmail EMAIL
Subject = "My Email Subject"
From = "[email protected]"
To = '[email protected]'
CC = '[email protected]'
Type = 'Text/Plain';
Data _null_; File myEmail;
PUT "Email content";
PUT &q...
Take note of the email type: Type = 'text/html';
Filename myEmail EMAIL
Subject = "My Email Subject"
From = "[email protected]"
To = '[email protected]'
CC = '[email protected]'
Type = 'text/html';
Data _null_; File my...
There will be times where you only want to import a specific sheet from an excel file with multiple sheets. To do that, we'll use "SHEET=".
PROC IMPORT
OUT= YourNewTable
DATAFILE= "myfolder/excelfilename.xlsx"
DBMS=xlsx
REPLACE;
SHEET="Sheet1&quo...
A frequent question about StackViews inside Scrollviews comes from ambiguous with/heigh alerts on interface builder. As this answer explained, it is necessary to:
Add in the UIScrollView a UIView (the contentScrollView);
In this contentScrollView, set top, bottom, left and right margins to 0
Se...
