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Community Discussions
Trending Discussions on picon
QUESTION
I'm trying to get a data from an online JSON, so getting the json and printing it works without issue, but when I want a particular data, my IDE give me this error
...ANSWER
Answered 2021-Jan-13 at 18:21You are getting an array at the top level instead of a JSON object. You should use JSONArray instead of JSONObject to parse the inital response object.
QUESTION
I have to write a program for search the correspondent of "Nomi" by entering the "Prezzo" value, but when I do the binary search, I get the error:
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 7 on a binary search
Here is the code:
...ANSWER
Answered 2020-Nov-23 at 12:44There are at least two problems with your code.
- A precondition of
ricercaBinaria
is that the underlying data array is ordered. You are using unordered data in your test ricercaBinaria
will return the index in which a given argument (Double
) is located in your array. If it is not found, then-1
will be returned. As such, you need to check the returned index to verify that it is indeed positive before using it as an index array - otherwise the method will fail with the exception you are seeing- Beware of Double equality but that is for another question.
QUESTION
I have this image (https://cdn.pixabay.com/photo/2015/08/25/03/51/toner-906142__480.jpg) as as backround image and this light box below it. I would want to have the light box on top of my backround image, so that the backround image can be seen trough the box. I have tried to get in on (top of) the picture instead of being outside of it, but nothing works so far.
I want to have this headline and these words inside the white box, with the backround image seeing trough (opacity being maby 0.5).
...ANSWER
Answered 2020-Mar-31 at 18:25Simply add this CSS to your .transbox
styles
QUESTION
I am trying to run my ionic app on an android device by running the following command:
ionic cordova run andoid --device
However, I get the following error message:
BUILD SUCCESSFUL in 1m 41s
42 actionable tasks: 42 executed
Built the following apk(s):
C:\Users\myProfile\Desktop\ionic\Restrr\platforms\android\app\build\outputs\apk\debug\app-debug.apk
native-run.cmd android --app platforms\android\app\build\outputs\apk\debug\app-debug.apk --device
[native-run] Selected hardware device 2410169c6d0c7ece
[native-run] Installing platforms\android\app\build\outputs\apk\debug\app-debug.apk...
[native-run] ERR_UNKNOWN: Non-zero exit code from adb: 1 [ERROR] An
error occurred while running subprocess native-run.
native-run.cmd android --app platforms\android\app\build\outputs\apk\debug\app-d... exited with exit code 1.
When I search Programs & Features for 'Java', I get the following programs:
I also added a ANDROID_SDK_ROOT
environment variable below, but the same error message is appearing:
ANSWER
Answered 2019-Aug-09 at 06:14Remove your java jdk
then install
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
QUESTION
I have a problem and I can't get past it... I am writing a program in Java using swing. That program will be used to to chose a day from a displayed calendar and put an hours of Your work (e.g 8:00 - 16:00) then the program will calculate how many hours You have worked in month and will calculate Your salary.
I've written some code so when starting the program you see a representation of current month. I wanted to add an ActionListener
to a button which will rearrange look of calendar to previous month. I wanted to use the same method that generates the current month but sending a different argument (previous month date).
To test it I used that method on the ActionListener
(so when I start it I see blank form and after pressing that button it will show me the current method) and the problem is that nothing at all is happening... That method works fine when I put it in the constructor of my class but doesn't work when it is used as action performed and I don't know why.
I hope You will help me to figure it out and maybe tell me where I made a mistake and what I can do about it. This is a hobby for me I don't have any professional experience in programming.
My code:
...ANSWER
Answered 2020-Jan-14 at 11:14Change calendarGenerator
so it accepts an argument which is an arbitrary date in the month you want to generate:
QUESTION
I have XAMMP x86, on Windows 7, PHP 7.3.2.
Installed Imagick following instructions: https://github.com/Imagick/imagick
Everything works fine, except HEIC format reading.
I get an error:
ImagickException: NoDecodeDelegateForThisImageFormat HEIC' @ error/constitute.c/ReadImage/509
PHPINFO:
...ANSWER
Answered 2020-Jan-09 at 21:22The version of ImageMagick that you are using is too old. You will need to upgrade to at least the version below but I would advise you to upgrade to the latest version.
QUESTION
I'm trying to parse an m3u file but have hit a wall.
M3U file looks like this:
...ANSWER
Answered 2019-Sep-16 at 20:59You could use 2 capturing groups and for the value of tvg-name use a negated character class matching any char except "
instead of a non greedy .*?
The values are in group 1 and group 2 which are accessible using the Match.Groups property.
If the next line should start with http and perhaps an optional s:
QUESTION
THE PROBLEM:
...The number “pi” (3.14159...) can not be expressed as a simple ratio of two numbers. Instead, the value of pi is typically calculated by summing up the terms of an infinite number series. As more and more terms in the series are evaluated, the sum approaches the “true” value of pi. One series that can be used for this purpose is called the Gregory series, which computes the value of pi as follows: pi = 4/1 – 4/3 + 4/5 – 4/7 + 4/9 – 4/11 + …
Observe that the numeric values of the terms of the series get smaller and smaller as the calculation progresses. For example, the value of the 1st term is 4/1 = 4, the 2nd term is 4/3 = 1.333…, the 3rd term is 4/5 = 0.8, and so on.
Write a program that calculates the value of pi using the Gregory series. The input to the program will be a decimal value called limit. The program shall proceed to calculate the value of pi by summing up the terms of the series, but only until such time that the value of the term being summed becomes less than or equal to the value of limit, at which point the program terminates the summation. Thus, the last term of the series that is added to the sum is the first term whose value is less than or equal to the value of limit.
The program then prints out the calculated value of pi at that point, as well as the actual number of terms that were summed up by the calculation.
ANSWER
Answered 2019-Sep-14 at 14:50Your calculation in number of iteration were wrong. I have corrected your code. Also I have printed the series for convenience. Now the value is as expected.
QUESTION
The error is: the update operation document must contain atomic operators.
...ANSWER
Answered 2019-Jun-09 at 18:58sample code for update.
QUESTION
I'm trying to de a SELECT
in php
on my database with a prepared statement, using an array of insert values. At the moment I work with stored procedures and my code looks likt this:
ANSWER
Answered 2019-Mar-13 at 12:45You appear to be using the mysqli_
PHP code library to connect to your database. MySQLi
does not support named parameters. You didn't say exactly where you got your example from but I would guess it was from a page relating to the PDO
library. They are different libraries with different (although similar-looking, if you don't check closely enough) function names and capabilities.
There's nothing stopping you from continuing to use the supported syntax however. You just need to switch the order you supply the parameters in order to match the order they appear in the SQL. (Or alternatively of course you could switch the order of the WHERE clauses in the SQL, but here I have switched the order of the parameter values.)
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