scoping – conflict with hidden names

The following code depends on Mathematica 12.0.0:

D(Log(1 - 1/p^Cos(t)), {t, 4})
Unprotect(Plus);
Plus(x_?Positive, j_Gap) := 0;
Protect(Plus);
1 + 1
D(Log(1 - 1/p^Cos(t)), {t, 4})

The strange line 3 defines how to number objects with the head "gap". This is a structure that I define. (The right side of this line does not seem to matter, so I've set it to 0 for simplicity.) If you're just asking for a third derivative or a fourth derivative of a simpler function, there's no problem.

But here's the surprise (for me): Change "Gap" to "Gap" or to "Gappe" and the problem disappears. My guess is that somewhere deep in the trigger simplification triggered by this derivation is a variable or function named "Gap", and that somehow causes me problems on the surface.

My question is simply: What did I do wrong? Is this an error or is this behavior expected? Do I have to give up with the head "Gap"? Is there a safer way to overload built-in functions?

Add article numbers and product names to Magento 2.2.7 Sales Order Grid

I changed the order grid layout by including this code in the vendor / magento / module-sales / view / adminhtml / ui_components / salesordergrid.xml file:

text range
items

The "Article" column is now displayed.

I've created a class called Magento Sales Ui Component Listing Column Items.php

See the code below:

Use Magento Framework Escaper.
Use Magento Ui Component Listing Columns Column.
Use Magento Framework View Element UiComponent ContextInterface.
Use Magento Framework View Element UiComponentFactory.
Use Magento Sales Model ResourceModel Order Status CollectionFactory.

/ **
* Class items
* /
class Items extends column
{
/ **
* @var Escaper
* /
protected $ escaper;

/**
 * @param ContextInterface $context
 * @param UiComponentFactory $uiComponentFactory
 * @param Escaper $escaper
 * @param array $components
 * @param array $data
 */
public function __construct(
    ContextInterface $context,
    UiComponentFactory $uiComponentFactory,
    Escaper $escaper,
    array $components = (),
    array $data = ()
) {
    $this->escaper = $escaper;
    parent::__construct($context, $uiComponentFactory, $components, $data);
}

/**
 * Prepare Data Source
 *
 * @param array $dataSource
 * @return array
 */
public function prepareDataSource(array $dataSource)
{
    if (isset($dataSource('data')('items'))) {
        foreach ($dataSource('data')('items') as & $item) {
          $item($this->getData('name')) = "test";/*nl2br($this->escaper->escapeHtml($item($this->getData('name'))));*/
        }
    }

    return $dataSource;
}

}

How do I get access to product data for the current order to display in the column?

At the moment I have only one wildcard string: "test" is output for each line.

***** $ item ($ this-> getData (& # 39; name & # 39;)) = "test"; *****

Which class / method do I need to call to output the product data, e.g.

$ item ($ this-> getData (& # 39; name & # 39;)) = function that returns order product data.

Air travel – passport names (immigration)

I need your advice, please. For example, suppose a certain friend of mine is wanted in his country and has traveled, but only his name and a photo of 8 years ago are known. If he goes to another country and creates a new passport of the same name and uses it for travel, he will still be a problem at the airport and find that he is a wanted person, even when traveling to another country the nationality and the passport are changed?

C MACRO for comparing function names with predefined name lists

I have some features that I integrate in Windows (about 200), and I want to add some generic functions to all of them. Based on a flag, I tell my application to either attach some predefined functions or not.

What I intended to do would be something like this:

#define SHOULD_CHECK_STOP_MONITOR           (1 == Configuration.dwShouldMonitor)
#define MY_CHECK_MACRO(f) (if(SHOULD_CHECK_STOP_MONITOR && /* What do I do here? */))

void MyHookedFunctionName_A(...)
{
    if(!MY_CHECK_MACRO(__FUNCTION__))
        goto lbl_Cleanup;

    /* rest of code logic */

lbl_Cleanup:
    return ...;
}

void MyHookedFunctionName_B(...)
{
    if(!MY_CHECK_MACRO(__FUNCTION__))
        goto lbl_Cleanup;

    /* rest of code logic */

lbl_Cleanup:
    return ...;
}

The result I want to achieve is precompiled logic, which should not be run at dynamic runtime, but at compile time. where if 1 == Configuration.dwShouldMonitor is configured True, it checks the rest of the logic where I would have some kind of predefined list of function names ("MyHookedFunctionName_A", "MyHookedFunctionName_C", "MyHookedFunctionName_D") and the macro would know if it should return False or True based on the function name. So in this example MyHookedFunctionName_B would execute while MyHookedFunctionName_A Would not be due to the predefined list in the compilation.

Is this possible at all? for a "sophisticated" logic based on function names and compare it to predefined string function names?

Programming Challenge – Project Euler # 22 Java – Names scores

Use names.txt (right click and & # 39; link / save target as … & # 39;), a 46 KB text
File with more than five thousand first names, sort them first
in alphabetic order. Then calculate the alphabetic value for
Multiply this value for each name by its alphabetic position in the
List to get a name rating.

For example, if the list is sorted in alphabetical order, COLIN,
what is worth 3 + 15 + 12 + 9 + 14 = 53 is the 938th name in the
List. So COLIN would get a score of 938 × 53 = 49714.

What is the sum of all name ratings in the file?

try {
    String names();
    List list = Files.readAllLines(Paths.get("C:\Users\Omar Ahmed\Desktop\text.txt")); 
    String str = list.get(0);
    names = str.split("","");

    names(0) = names(0).substring(1);
    int n = names.length;
    names(n-1) =  names(n-1).substring(0, names(n-1).length()-1);

    for(int x = 0; x < n; x++) 
        for(int y = x+1 ; y < n; y++) 
            if(names(x).toUpperCase().compareTo(names(y).toUpperCase()) > 0) {
                String temp = names(x);
                names(x) = names(y);
                names(y) = temp;
            }

    BigInteger big = new BigInteger("0");
    for(int i = 0; i < n; i++) {
        long temp = 0;
            for(char ch : names(i).toCharArray()) {
                temp += ch%64;
            }
        temp*=(i+1);
        big = big.add(new BigInteger(String.valueOf(temp)));
    }
    System.out.println(big);

} catch (Exception ex) {
    Logger.getLogger(ProjectEuler.class.getName()).log(Level.SEVERE, null, ex);
}

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& # 39);
var sidebar_align = & right; & # 39 ;;
var content_container_margin = parseInt (& # 39; 350px & # 39;);
var sidebar_width = parseInt (& # 39; 330px & # 39;);
// ->

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replacement – Hide variable names in function definitions

I have a problem where the name of the replacement variables for tables and similar functions may conflict with the names in my function itself. Here is a minimal example

foo(a_) := 
 Probability(x > 0, x (Distributed) NormalDistribution(a, 1))

when I execute

foo(-1)//N

I get the correct answer (.158655).

if I execute instead (or use table or similar)

foo(x) /. x->-1

I get 0 because the substitution operator inserts x in the character Probability also make arguments foo Probability(-1>0,...,

The obvious "problem" is just not using the same variable, but then I have to remember how I've defined every function I've written, and if I forget, I risk making a mistake that may be obvious is or not.

Powershell – Problem attaching a string to the end of all file names in Power Shell

I have files look like

data.svg
map.svg
aplicationp.svg
...
*.svg

I try to add -b String up to the end of all file names, if the rename power shell command is used as follows

D:icons> Dir | Rename-Item -NewName {$_.name -replace ".","-b."}

to get these

data-b.svg
map-b.svg
application-b.svg

but that does not change anything. Could you please tell me how this can be achieved?

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