Scoping a StringBuilder inside a for loop

Scoping a StringBuilder inside a for loop

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Scoping a StringBuilder inside a for loop
Tag : java , By : user157138
Date : January 10 2021, 01:57 PM

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Is using StringBuilder Remove method more memory efficient than creating a new StringBuilder in loop?

Tag : chash , By : Feroz
Date : March 29 2020, 07:55 AM
This might help you Several of the answers gently suggested that I get off my duff and figure out it myself so below are my results. I think that sentiment generally goes against the grain of this site but if you want something done right, you might as well do.... :)
I modified option #1 to take advantage of @Ty suggestion to use StringBuilder.Length = 0 instead of the Remove method. This made the code of the two options more similar. The two differences are now whether the constructor for the StringBuilder is in or out of the loop and option #1 now uses the the Length method to clear the StringBuilder. Both options were set to run over an outputStrings array with 100,000 elements to make the garbage collector do some work.
ClassName   Instances   TotalBytesAllocated Gen0_InstancesCollected Gen0BytesCollected  Gen1InstancesCollected  Gen1BytesCollected
=======Option #1                    
System.Text.StringBuilder   100,001 2,000,020   100,016 2,000,320   2   40
System.String   301,020 32,587,168  201,147 11,165,268  3   246
System.Char[]   200,000 8,977,780   200,022 8,979,678   2   90
System.String[] 1   400,016 26  1,512   0   0
System.Int32    100,000 1,200,000   100,061 1,200,732   2   24
System.Object[] 100,000 2,000,000   100,070 2,004,092   2   40
======Option #2                 
System.Text.StringBuilder   200,000 4,000,000   200,011 4,000,220   4   80
System.String   401,018 37,587,036  301,127 16,164,318  3   214
System.Char[]   200,000 9,377,780   200,024 9,379,768   0   0
System.String[] 1   400,016 20  1,208   0   0
System.Int32    100,000 1,200,000   100,051 1,200,612   1   12
System.Object[] 100,000 2,000,000   100,058 2,003,004   1   20

Using a loop variable inside a function, javascript scoping confusion

Tag : javascript , By : Milander
Date : March 29 2020, 07:55 AM
wish helps you I have built a dropdown menu system, everything works when tested independently, the problem I have is in the code below. I use the jQuery ready function to build the menu bar from an external array (menubar[]). Here I am trying to get the mouseover event to call the dropdown() function, but using a different argument for each anchor tag.
$(function() {
        $("#menu").append('<a href="' + baseurl + '/' + menubar[i].url + '" class="menutitle">' + menubar[i].name + '</a>');

    $("#menu a").hover(
            activeTimer = setTimeout("removedropdowns()", 100);

Stringbuilder add new line inside foreach loop

Tag : chash , By : Alpinfish
Date : March 29 2020, 07:55 AM
Any of those help In html new line is not \r\n but it's
, so you need to add
after each element, a simple string.Join should work fine:
var result = string.Join("<br>", groups);

Is there a memory penalty to use a string rather than a StringBuilder inside a loop?

Tag : java , By : flesk
Date : March 29 2020, 07:55 AM
should help you out since garbage collector doesn't allow memory leak, there's no memory penalty because this statement:
str_1 = an_object_var.toString(); 
for(long i = 0; i < 1000000000000; i++)
   str_1 = an_object_var.toString();            

How to correct Laravel's Blade variable section scoping when yielding inside a loop?

Tag : php , By : beng
Date : March 29 2020, 07:55 AM
wish helps you After wading through the source code, namely BladeCompiler and View/Factory I noticed the following snippet:
protected function compileOverwrite($expression)
    return '<?php $__env->stopSection(true); ?>';
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