Posts by Woss • 73,416 points
1,476 posts
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2
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answer291
viewsA: Is the ALT attribute inside the SPAN tag valid?
No, much less makes sense. The element <span> allows only the global attributes of HTML and alt You’re not one of them. Otherwise, apparently this image is part of the content of the page,…
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1
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answer486
viewsA: How to speed up my python program?
There are several factors in your code that will directly impact the performance of the application without it being the direct fault of Python, but only of bad structuring of the same code. First,…
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answer647
viewsA: python (Logging) daily log file
Just change the file name of Log.txt for the current date: from datetime import date log_file = path.join(path.dirname(path.realpath(__file__)), f"{date.today()}.txt") The function date.today()…
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answers71
viewsA: Why is the pseudo-class :Hover not working?
Because the selector you used in CSS does not agree with your structure in HTML. While doing #p1:hover #p2 you will be selecting the element #p2 that is descended of the element #p1, but in HTML the…
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answers519
viewsA: Remove last space from a variable
1) Removing the last blank To remove the last space, you will first need to make sure that it is a blank space. If it is, return all the string except the last character. if (mb_substr($name, -1)…
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answers104
viewsA: Hover does not work
Briefly, the problem is that your HTML is very poorly structured. The code starts with a <li> loose; Here we can even consider that you omitted the rest of the code, but it’s just an…
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answer190
viewsA: algorithm to remove repeated elements in python
First, you need to remember that a stack has the English LIFO behavior last input, first output; i.e. the last one in will be the first one out. So, when you pop elements of P and stack them into Q,…
python-3.xanswered Woss 73,416 -
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answers668
viewsA: Problems trying to access JSON file in Python
The name json.loads has S at the end just to indicate "load String". json.loads(s, *, encoding=None, cls=None, object_hook=None, parse_float=None, parse_int=None, parse_constant=None,…
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answer97
viewsA: Sum variable is accumulating the value instead of starting at zero
That’s because you started the value of soma out of the loop, then the value will accumulate during the iterations. What you need to do is start the soma at zero for each new client, within the…
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answer152
viewsA: How to send variable with link in PHP
Considering $id = $_SESSION['idusuario']. Concatenating strings: echo '<a href="DepoimentosPT-BR.php?id='.$id.'">Depoimentos</a>'; Interpolating strings: echo "<a…
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answers362
viewsA: Is adding more than one element to Append possible?
With the method append is not possible. If you look at documentation you will see that it accepts only one parameter: list.append(x) Add an item to the end of the list. Equivalent to a[len(a):] =…
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answers48
viewsA: Verification of repeated information in array
array_diff (PHP 4 >= 4.0.1, PHP 5, PHP 7) array_diff - Computes the differences between arrays array_diff ( array $array1 , array $array2 [, array $ ... ] ) : array Compares array1 with one or…
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answers127
viewsA: How to write the condition "if not A" more explicitly?
When you do something like if A: ... In Python happens what we call Truth Value Testing, that in a fairly free translation would test the veracity of the value. It turns out that some values are…
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6
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answers124
viewsA: Get the date of the first Tuesday of each month
As I commented on Does not return date in input it makes no sense to do: $terca = date($dia->format('Y-m-d')); You create an object DateTime, formats in a string to use again in date? I reinforce…
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answer137
viewsA: JSON badly formatted
Instead of open up, write down and close the file at each iteration in its loop of repetition, why not keep it open during the process? Incidentally, the problem is that you are formatting for a…
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answers78
viewsA: How to style classes initiated with . fa-?
But why do you need to change the font color directly on the icon? Just change it in the context the icon is in. body { font-size: 5rem; } div { color: green; } p { color: red; } <link…
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answer42
viewsA: Deduct quantity within a PHP loop
To change the data within the loop you must go through by reference. foreach ($estoques as &$estoque) { // -----------------^ } And so basically implement the logic you’ve already made: foreach…
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answers82
viewsA: How to turn multiple variables into one PHP
With PHP you can check which value is filled and use it. Like the other values will be strings empty, just make a logical operation between them: $quantidade = $_POST['qtdbuffet1'] ||…
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answers650
viewsA: What is the best way to build a Mysql table with recipe items? All ingredients in one row or one ingredient per row?
I see at least three steps to making the ideal solution: Solve the problem; Make the solution beautiful; Make the solution fast; It seems you are starting with item 3, worrying if the solution will…
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answer57
viewsA: Does not return date in input
Do you understand exactly what you are doing or are you trying to code separately? With $dia->format you format your object DateTime for string; then with the function strtotime you create again…
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answers689
viewsA: Using self-free method in Python
You can do what you want, but do it when you know what you’re doing. As Maniero replied, as he put it, it seems more that you only need two functions, so review the need for a class. However, in…
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answers566
viewsA: How does Python handle and represent an array internally?
First, array is different from list. When it comes to Python’s "list", it is wrong to call "array"? In many cases, usually more information, the nomenclature error will not be an aggravating and…
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answer124
viewsA: Validate explodes
If the full name of the person does not have a blank space, the function explode will return a array of only one element at zero; you cannot access index 1 assuming it will exist, because when it…
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answers34
viewsA: validation of a Parameter of number type, in jsonschema
As commented, you want to validate that your number has up to 23 characters in the whole part and 8 characters in the decimal part. You don’t do it with numbers, you do it with strings. The guy…
javascriptanswered Woss 73,416 -
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answer89
viewsA: Sort array as more than one condition
To sort, you will need to group the values using the function array_map, make ordination with usort and then return the original structure with array_column. For example, you have the following…
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answer178
viewsA: Create an empty set() object
Just like you put it in the title, set is a predefined class in Python, so just instantiate it as well as you do with any other class: objeto = set() As you have noticed, the keys define an empty…
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answers5265
viewsA: Scientific notation in Python
You don’t need any library for this, Python itself already has tools for formatting in scientific notation, just use the e in formatting: >>> número = 123456789.123456 >>>…
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answers85
viewsA: Make item open when giving
You yourself answered: the problem arises because they are fraternal elements; when the mouse is on the secondary menu, the event of Hover is waxed. How to resolve? Do what the hover stays even over…
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answers4843
viewsA: For a search with no results, should the HTTP response be 404, 204 or 200 with an empty body?
First, I must say that one of the Urls seems to be poorly built. The text means that the URL /users/name/guilherme return all users it has name equal to guilherme. If it is a search, it is not a…
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answers156
viewsA: Pin tabs bar below navigation bar (navs x navbar)
It’s not just putting the two elements inside the same <div> and add the class .sticky-top in it? <script…
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answer178
viewsQ: Are there advantages to using "use Function" for native PHP functions?
When worked with namespaces, it is normal to see the use of use to import classes outside the local scope: namespace Foo; use Bar\Classe; use DateTime; It is also possible to do the same with…
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answers247
viewsA: How to force string interpolation when one comes from the database?
Interpolation works when the string is handled directly by the PHP interpreter. Since it is static in the code, it can analyze it and generate the necessary structure for the interpolation of…
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answer98
viewsA: Show value, not form ID
According to the documentation: For each model field that has Choices set, Django will add a method to Retrieve the Human-readable name for the field’s Current value. See get_FOO_display() in the…
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answers1397
viewsA: How to calculate the value of a polynomial function at an arbitrary point?
Answer still incomplete, but already has content on full polynomials. Complete Polynomials By complete polynomials we mean the polynomials that can be represented by Being thei other than zero; that…
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answers6310
viewsA: How to stop the end='' command in Python
Another important point is that you don’t need to make a repeat loop just to display the values of the tuple. You can generate the string from the method str.join: tabela = ('Palmeiras', 'Flamengo',…
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answers53
viewsA: Library import
There are some advantages, yes. Does not pollute the local scope; One of the great advantages of modularizing code is separating things into different scopes, so you have the freedom to work on your…
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answers189
viewsA: Add array at the end of another array in a foreach
If you need to change the element of array, needs to maintain the reference of the same. Remember that the foreach naturally iterates over a copy of array. So you need to put the character &…
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answers110
viewsA: Maintain select element value when cloning with jQuery and deleting Labels
When you do the clone in jQuery, the state of select is not cloned together, so you will need to set the values according to the last selected value. To do so, you can always clone the last item on…
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answer122
viewsA: Mean between positions of two vectors
If it is guaranteed that all lists have the same number of elements, you can use the function zip to generate the lists with the values of each position, calculating the average by dividing the sum…
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answer186
viewsA: Statement for 2 arguments, how does it work?
def multiple_of_index(arr): return [val for index, val in enumerate(arr) if index and val % index == 0] The parameter arr will be of an eternal type. The function enumerate will go through the…
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answer4515
viewsA: Python data output formatting
You formulated the solution incorrectly. It is not the size of the spacing between the values that is constant, but the width available for each column. If you notice the desired output: 1 alexandre…
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answer101
viewsA: Error in function - Empty return
Unlike many other programming languages, variables that are defined in the global scope are not naturally imported into the local scope. Thus, a variable that is defined outside the function will…
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answers212
viewsA: PHP percentage calculation and save to Database
I recommend reading again the documentation of the functions you are using: execute, bindParam. The method PDOStatement::execute() expects a parameter of type array, which is optional, but you pass…
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answers1399
viewsA: Is there a difference between flex-Basis, flex-Grow and width? What is the recommendation for using them in a Flex container?
He obtained the same by an innocent coincidence, that is, in this particular situation resulted in the same thing, being two child elements and using 50%. Not always - in fact almost never - will…
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answer46
viewsA: Remove classes recursively
Just you do: $('.active').removeClass('active'); This will remove the class active of any element than possess it. If you want to limit the search tree to avoid conflicts with the rest of the page,…
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answers187
viewsA: Create dynamic menu that adjusts the size of the div
I wouldn’t use it grid for this solution, as the grid was created thinking of... well, grid. What you need is not to create a grid, but just to align the elements in the desired way. For this I…
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answers681
viewsA: What makes cache invalidation a difficult solution?
The caches are the mogwais of computing: they are cute, friendly and our friends, but they have the three rules that must be obeyed: It cannot come into contact with water; Keep it away from the…
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answers3255
viewsA: Using Append - Python
Add an element to a list dynamically and there are several reasons why this is possible: Do not know previously the value to be added; Make sure your list has room for the new value; And possibly…
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answers401
viewsA: Skipping route due to poorly formatted parameter is a syntax error?
The URL is an opaque value by definition, meaning that it does not necessarily reflect the structure of your application; so much so that accessing /user/1 is not necessarily access the file in…
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answer35
viewsA: How to create sequential objects?
There are numerous ways to implement this, but in essence just understand exactly what the line of code does: $user = Database::table('users')->where('name', 'John')->first(); Database is a…