extend | Create extensions for types you do n't own with extension | Web Framework library
kandi X-RAY | extend Summary
kandi X-RAY | extend Summary
Create extensions for types you don't own with extension traits but without the boilerplate.
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Trending Discussions on extend
QUESTION
This code receives information from an acquaintance you want to register in editText, and then clicks finButton to save the information you receive as a file called friendlist.txt. However, the Toast message is outputted from the try-catch statement that is currently performed when finButton is pressed. Also, the checkpermission does not work, which is wrapped in a try~catch statement, but does not have output on the logcat.
And manifest.
uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"
uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
is written.
Please let me know the solution. And this content is written with a translator, so the sentence can be strange.
when you press finButton, the logcat is shown below.
The code corresponding to the 116th line is this.
...FileOutputStream outstream = openFileOutput("friendList.txt", Activity.MODE_WORLD_WRITEABLE);
ANSWER
Answered 2021-Jun-16 at 01:47Try with Context.MODE_APPEND or Context.MODE_PRIVATE instead of Activity.MODE_WORLD_WRITEABLE
QUESTION
I want to Edit data, so for that, I should display it in a form.
In my table in the database, I have a primary key named id_casting
So I have he following code :
My script :
...ANSWER
Answered 2021-Jun-15 at 22:38By default laravel thinks that id is the primary key in your table. To fix this you would have to a primary key variable in your model
QUESTION
Is it possible to two reduce objects into one by summing their properties like so for any generic object
...ANSWER
Answered 2021-Jun-04 at 20:04A functional approach would be (but probably not clean)
QUESTION
My app consists in letting you add lists in which you can keep your notes. Therefore, I have this NotesListActivity where I can add and keep my Lists. I wanted to filter this lists following the https://www.youtube.com/watch?v=CTvzoVtKoJ8 tutorial and then I tried to adapt it to my code like below. Could you please tell me what is the problem here, cause I don't even get an error, I just not get any title of list as result. So, this is what I have in my RecyclerAdapter:
...ANSWER
Answered 2021-Jun-13 at 20:18The problem is that you are using an empty notesListAll
list for filtering results; you need to populate it with the list of notes in the constructor
QUESTION
GNU grep's basic (BRE) and extended (ERE) syntax is documented at https://www.gnu.org/software/grep/manual/html_node/Regular-Expressions.html and PCRE is summarized at man pcresyntax
, but there is no explicit comparison. What are the differences between GNU grep's basic/extended and PCRE (-P
) regular expressions?
ANSWER
Answered 2021-Jun-15 at 20:55My research of the major syntax and functionality differences from http://www.greenend.org.uk/rjk/tech/regexp.html:
.
in GNU grep does not match null bytes and newlines (but does match newlines when used with--null-data
), while Perl, everything except\n
is matched.[...]
in GNU grep defines POSIX bracket expressions, while Perl uses "character" classes. I'm not sure on the details. See http://www.greenend.org.uk/rjk/tech/regexp.html#bracketexpression- "In basic regular expressions the meta-characters
?
,+
,{
,|
,(
, and)
lose their special meaning; instead use the backslashed versions\?
,\+
,\{
,\|
,\(
, and\)
." From https://www.gnu.org/software/grep/manual/html_node/Basic-vs-Extended.html. ERE matches PCRE syntax. - GNU grep
\w
and\W
are the same as[[:alnum:]]
and[^[:alnum]]
, while Perl uses alphanumeric and underscore. - GNU grep has
\<
and\>
for start and end of word.
Perl supports much more additional functionality:
- "nongreedy {}" with syntax
re{...}?
- additional anchors and character types
\A
,\C
,\d
,\D
,\G
,\p
,\P
,\s
,\S
,\X
.\Z
,\z
. (?#comment)
- shy grouping
(?:re)
, shy grouping + modifiers(?modifiers:re)
- lookahead and negative lookahead
(?=re)
and(?!re)
, lookbehind and negative lookbehind(?<=p)
and(?
- Atomic groups
(?>re)
- Conditional expression
(?(cond)re)
- ... and more, see
man pcresyntax
QUESTION
i'm trying to use public publicRuntimeConfig inside a TypeScript plugin with no success. With JS plugins i have no problems. But now i'm really stuck, i think i don't look at the right place.
The question is how can i access to this config in a TypeScript plugin ?
Here's my nuxt.config.js:
...ANSWER
Answered 2021-Jun-15 at 20:42Nuxt makes the $config
available in two ways: as this.$config
on every component instance, and context.$config
passed to "special nuxt lifecycle areas like asyncData
, fetch
, plugins
, middleware
and nuxtServerInit
" (docs).
It looks like you need to access the $config
outside a component, so you'll need to retrieve it early in the request cycle. In particular, since you're mutating the Vue.prototype
, this feels like a good fit for a plugin in the Nuxt sense, which isn't quite what you've got in your code.
If you put your plugin file in the plugins
directory and reference it from the plugins
array in nuxt.config.js
(see link above for a broader example), you could rewrite it like this to access $config
:
QUESTION
I dont know what am I doing wrong... In constructor, I wanna receive a Class of an enum, and I want to return the correct enum, when a value passed as parameter to convert().
...ANSWER
Answered 2021-Jun-15 at 19:48change the type and the constructor:
QUESTION
I'm following a tutorial about RecyclerView, but I can't write ct:
the way he did. I typed in manually, but it does not work. I'm not sure how he typed it. He typed in this
, then android studio writes ct:
automatically. What do I need to type to do that?
MyAdapter is a class I created for RecyclerView. Here is the code for that class:
...ANSWER
Answered 2021-Jun-15 at 19:45The little lighter colored "ct" prompt is just a visual aid and it does not always show up. When you provide a raw value as an argument, it will show the prompt (like this, 1, or "foo"). When you provide a variable for the argument like ctx, foo, etc, it does not show up. This goes for all functions that take arguments.
The moral of the story is, it is not important and can be ignored.
QUESTION
I'm implementing Testing Library with Puppeteer and I was trying to use an environment variable, DEBUG_PRINT_LIMIT, to limit the length of the HTML printed to console in case of failure.
But for some reasons, the variable environment is just ignored by the library...
My project:
package.json
...ANSWER
Answered 2021-Jun-15 at 19:16If finally figured it out.
It's actually a bug in the library itself: https://github.com/testing-library/pptr-testing-library/issues/55
QUESTION
I am working on extending a Vue.js frontend application. I am currently inspecting a render function within a functional component. After looking over the docs, I had the current understanding that the render function within the functional component will return a single VNode created with CreateElement aka h. My confusion came when I saw a VNode being returned as an element in an array. I could not find any reference to this syntax in the docs. Does anyone have any insight?
...ANSWER
Answered 2021-Jun-15 at 15:37It seems this was implemented in:
https://github.com/vuejs/vue/commit/c7c13c2a156269d29fd9c9f8f6a3e53a2f2cac3d
This was a result of an issue raised in 2018 (https://github.com/vuejs/vue/issues/8056) , because this.$scopedSlots.default() returned both a VNode or an array of VNodes depending on the content.
The main argument was that this is inconsistent with how regular slots behave in render functions, and means any render function component rendering scoped slots as children needs to type check the result of invoking the slot to decide if it needs to be wrapped in an array
So Evan comments on the issue thread here, explaining that this.$scopedSlots.default would always return Arrays beginning v2.6 to allow for consistency, but to avoid breaking changes for how $scopedSlots was being used, the update would also allow return of an Array of a single VNode from render functions as well.
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