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Issue 332 fixed: 8.2 listing #343

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Merged
pearcej merged 4 commits into from
Aug 4, 2026
+13 −9
Merged

Issue 332 fixed: 8.2 listing #343

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f46f5ef
add listing tags
habibasorour Aug 3, 2026
82168db
fixed a broken code
habibasorour Aug 3, 2026
92c7528
add listing in text
habibasorour Aug 3, 2026
b2ca8bc
fixed a code
habibasorour Aug 3, 2026
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1 change: 1 addition & 0 deletions source/ch7_recursion.ptx
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Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,7 @@ def main():
main()
</code>
</program>
</listing>

<p><idx>separation of concerns</idx>
The key insight here is called the <term>separation of concerns</term>. The public <c>sum_array</c> method provides a user-friendly interface—callers just pass an array and get the sum. Users don't need to know about indexes or how the recursion works internally. The private <c>_sum_helper</c> method handles the recursive logic with the extra parameter needed to track progress through the array.
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21 changes: 12 additions & 9 deletions source/ch8_filehandling.ptx
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Expand Up @@ -73,10 +73,10 @@


<p>
We will now create a <c>File</c> object. It is important to create a meaningful name for the <c>File</c> object. We will call ours <c>myFile</c>, and we will call our class <c>CreateFileObject</c>.
We will now create a <c>File</c> object. It is important to create a meaningful name for the <c>File</c> object. We will call ours <c>myFile</c>, and we will call our class <c>CreateFileObject</c>. <xref ref="create-file-object-java" text="type-global"/> shows the code to create a <c>File</c> object in Java.
</p>

<program xml:id="create-file-object-java" interactive="activecode" language="java" add-files="myfile-created">
<listing xml:id="create-file-object-java">
<program interactive="activecode" language="java" add-files="myfile-created">
<code>
import java.io.File;

Expand All @@ -90,6 +90,7 @@ public class CreateFile {
}
</code>
</program>
</listing>

<note>
<p>
Expand All @@ -103,10 +104,10 @@ public class CreateFile {
</p>

<p>
First, lets look at the equivalent Python code:
<xref ref="create-file-python" text="type-global"/> shows the equivalent code to create a file in Python.
</p>

<program xml:id="create-file-python" interactive="activecode" language="python">
<listing xml:id="create-file-python">
<program interactive="activecode" language="python">
<code>
filename = "newfile.txt"
print("Attempting to write to '" + filename + "' using 'w' mode...")
Expand All @@ -120,12 +121,13 @@ public class CreateFile {

</code>
</program>
</listing>

<p>
Now, let's look at Java code that accomplishes the same task:
<xref ref="create-file-java" text="type-global"/> shows the equivalent code to create a file in Java.
</p>

<program xml:id="create-file-java" interactive="activecode" language="java">
<listing xml:id="create-file-java">
<program interactive="activecode" language="java">
<code>
import java.io.File;
import java.io.IOException;
Expand All @@ -148,6 +150,7 @@ public class CreateFile {
}
</code>
</program>
</listing>

<note>
<p>
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