Luca Zanini – Page 17

Longest Collatz sequence

Mar 25, 2013

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by

Luca Zanini

in Uncategorized

From the Project Euler Problem 14: The following iterative sequence is defined for the set of positive integers: n → n/2 (n is even) n → 3n + 1 (n is odd) Using the rule above and starting with 13, we generate the following sequence: 13 → 40 → 20 → 10 → 5 →…
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Attaching shared javascript and css code in a lotus form

Mar 24, 2013

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by

Luca Zanini

in Lotus

The javascript and css code used in a lotus form can also be useful in other forms, and so it is best to save it only one time in a shared place. The pages works well for this purpose and in this post I explain how to create page containing JavaScript code and css and…
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Getting the current document from a button in an embedded editor

Mar 20, 2013

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by

Luca Zanini

in Lotus

Consider the following scenario: a lotus form containing an embedded view and an embedded editor, the 2 embedded controls are linked together according to targeting by linking an embedded editor to an embedded view. The embedded editor contains a button that tries to get the current document (often called uidoc) with the code: Sub Click(Source…
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Varargs: passing a variable number of arguments to a method

Mar 17, 2013

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by

Luca Zanini

in Java

From version 5 of Java you can call a method passing a variable number of arguments. A variable of this type is called varargs, you can only use in a method signature and its syntax is the primitive type or object type followed by 3 dots (ellipsis).
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Large sum

Mar 6, 2013

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Luca Zanini

in Uncategorized

From the Project Euler Problem 13: Work out the first ten digits of the sum of the following one-hundred 50-digit numbers.
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Validation of an Edit Box control in the XPages

Mar 3, 2013

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by

Luca Zanini

in Lotus

In the XPages the “Edit Box” controls have some settings that allow you to perform simple validations. These settings are under the label “Validation” of the control and depend on the value of “Display Type” under the label “Data”; in the figure you can see a screenshot of the validation of an Edit Box control…
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Highly divisible triangular number

Feb 24, 2013

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Luca Zanini

in Uncategorized

From the Project Euler Problem 12: The sequence of triangle numbers is generated by adding the natural numbers. So the 7th triangle number would be 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28. The first ten terms would be: 1, 3, 6, 10, 15, 21, 28, 36, 45,…
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How to save the state of a WebView inside a Fragment of an Action Bar

Feb 22, 2013

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by

Luca Zanini

in Android

The idea for this post came to me after reading the comment of Esthon Wood: “do you have any idea on how to save the state of the WebView? I mean, the webview refreshes everytime I tap on the tab.” in the post Tab Layout in Android with ActionBar and Fragment.
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How to replace a Fragment in an ActionBar in mode NAVIGATION_MODE_TABS

Feb 14, 2013

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by

Luca Zanini

in Android

In the post Tab Layout in Android with ActionBar and Fragment I wrote an example about tabs in an action bar where each label open a fragment that you can not change at runtime. In this post I explain how to replace a fragment with an other using a button.
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Largest product in a grid

Feb 4, 2013

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by

Luca Zanini

in Uncategorized

From the Project Euler Problem 11: In the 20×20 grid below, four numbers along a diagonal line have been marked in red. 08 02 22 97 38 15 00 40 00 75 04 05 07 78 52 12 50 77 91 08 49 49 99 40 17 81 18 57 60 87 17 40 98…
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