use `replaceAll` and `toLowerCase` methods like this:

`myString = myString.replaceAll(&quot; &quot;, &quot;_&quot;).toLowerCase()`

This works for me:

    itemname = itemname.replaceAll(&quot;\\s+&quot;, &quot;_&quot;).toLowerCase();

`replaceAll(&quot;\\s+&quot;, &quot;_&quot;)` replaces consecutive whitespaces with a single underscore.

`&quot;first  topic&quot;.replaceAll(&quot;\\s+&quot;, &quot;_&quot;)` -&gt; `first_topic`

`&quot;first  topic&quot;.replaceAll(&quot; &quot;, &quot;_&quot;)` -&gt; `first__topic`


You can use the replaceAll &amp; toLowerCase methods but keep in mind that they don&#39;t change the string (they just return a modified string) so you need to assign the back to the variable, eg.

    String itemname = bundle.getString(&quot;itemname&quot;); 
    itemname = itemname.replaceAll(&quot; &quot;, &quot;_&quot;).toLowerCase(); 
    String filename = itemname + &quot;.html&quot;;

There is a [semi-famous article written by Guido himself](http://www.artima.com/weblogs/viewpost.jsp?thread=98196) hinting that `reduce()` should go the way of the dodo and leave the language.  It was even demoted from being a top-level function in Python 3 ([instead getting stuffed in the `functools` module](http://docs.python.org/py3k/library/functools.html)).

With many other functional programming staples (map, etc) common clear alternatives are available.  For example, most of the time a `map()` is better written as a list comprehension.

What I&#39;d like to know is if there is a similar &quot;more pythonic&quot; alternative to the reduce function.  I have a bit of a functional programming background (ML in particular), so `reduce()` often springs to my mind when thinking of a solution, but if there&#39;s a better way to do them (short of unrolling a reduce call into a for loop) I&#39;d like to know.

Python alternative to reduce()

Every time I run a program with `rand()` it gives me the same results.

Example:

    #include &lt;iostream&gt;
    #include &lt;cstdlib&gt;

    using namespace std;

    int random (int low, int high) {
        if (low &gt; high)
            return high;
        return low + (rand() % (high - low + 1));
    }

    int main (int argc, char* argv []) {
        for (int i = 0; i &lt; 5; i++)
            cout &lt;&lt; random (2, 5) &lt;&lt; endl;
    }


Output:

    3
    5
    4
    2
    3

Each time I run the program it outputs the same numbers every time. Is there a way around this?









Why does rand() yield the same sequence of numbers on every run?

I have following question. In my app there is a listview. I get itemname from listview and transfer it to the webview as a string. How to ignore case of this string and change spaces to underscores?

For example: `String itemname = &quot;First Topic&quot;`. I transfer it to the next activity and want to ignore case and change space to underscore (I want to get `first_topic` in result).
I get &quot;itemname&quot; in webviewactivity and want to do what I&#39;ve described for following code:

    String filename = bundle.getString(&quot;itemname&quot;) + &quot;.html&quot;;

Please, help.

How to change spaces to underscore and make string case insensitive?

I have following question. In my app there is a listview. I get itemname from listview and transfer it to the webview as a string. How to ignore case of this string and change spaces to underscores?
For example: <code>String itemname = "First Topic"</code>. I transfer it to the next activity and want to ignore case and change space to underscore (I want to get <code>first_topic</code> in result).
I get "itemname" in webviewactivity and want to do what I've described for following code:
<pre><code class="hljs language-ini">String filename = bundle.getString("itemname") + ".html";
</code></pre>
Please, help.

So I just recently started learning about how databases work, how to use SQL ect. and decided to start implementing an embedded database into my Java application (specifically the H2 database) and seemed to work fairly well on the computer I was coding on.

When I moved over to a different computer to continue my coding I noticed that even if I ported the embedded database file (h2-*.jar) All of the prepared tables I created in the first computer don&#39;t exist on the second one. I somehow had the preconception that the actual data generated through the database engine are also stored in the embedded database file.

So my question is, where is the data from the database actually stored? is it possible to prepare a database which already contains thousands of records and distribute it with the actual application? 

I should also mention that the way I connect to the database on the first computer was through a JDBC connection i.e. the URL: JDBC:h2:~/test and when I tried to connect to that database on the second computer it did not exist.

Thanks!

Where does H2&#39;s Embedded Databases Store the data?

I have been given a source folder (`src`) of a Java Project. I have created a `.project` file, kept it inside that folder and imported that project into Eclipse 3.6 through the Import Existing Projects into Workspace Option and added the required jars to it.

Now the problem is that when ever I do a Call Hierarchy on a Project, it displays an alert box saying 
**&quot;The resource is not on the build path of a java project&quot;**

Could somebody please let me know how to resolve this?

Please see the image here:

[![enter image description here][1]][1]

Thanks 


  [1]: https://i.stack.imgur.com/11vvL.png

Eclipse: The resource is not on the build path of a Java project

	List&lt;String&gt; list = Collections.synchronizedList(new ArrayList&lt;String&gt;());
	synchronized (list) {
		list.add(&quot;message&quot;);
	}

Is the block &quot;synchronized (list){} &quot; really need here ?

Collections.synchronizedList and synchronized

When I downloaded the Git project [OsmAnd][1] and went to compile it,
Eclipse returned these errors:

&lt;!-- language: lang-none --&gt;

    [Dex Loader] Unable to execute dex: GC overhead limit exceeded
    [OsmAnd]     Conversion to Dalvik format failed: 
                 Unable to execute dex: GC overhead limit exceeded

Google and Stackoverflow said that I must change `-Xms40m` `-Xmx384m` in `eclipse.ini`. 
[Conversion to Dalvik format failed: Unable to execute dex: Java heap space][2].  
I cleaned project and restarted Eclipse, but it did not help.

I found this link: [Tips for Android developer: “Conversion to Dalvik format failed: Unable to execute dex: null”][3]
But I do not know which `.jar` from my project to change the input in.
If anyone can help, I can send the project to them.


  [1]: http://osmand.net
  [2]: https://stackoverflow.com/questions/5943712/conversion-to-dalvik-format-failed-unable-to-execute-dex-java-heap-space
  [3]: http://www.cuteandroid.com/tips-for-android-developer-conversion-to-dalvik-format-failed-unable-to-execute-dex-null

Unable to execute dex: GC overhead limit exceeded in Eclipse

In one of my prof slides on ploymorphism, I see this piece of code with a couple of comments:


    discountVariable =              //will produce
      (DiscountSale)saleVariable;//run-time error
    discountVariable = saleVariable //will produce
                                    //compiler error

As you can see, it says in the first casting statement that it&#39;ll produce *run-time* error and in the other one it says it&#39;ll produce *compiler error*.

What makes these errors? and how they differ from each other?



What is the difference between run-time error and compiler error?

I made a simple `AlertDialog` in my **Activity**:

    View view = layoutInflater.inflate(R.layout.my_dialog, null);
    AlertDialog infoDialog = new AlertDialog.Builder(MyActivity.this)
    					.setView(view)	
    					.create();
    
    infoDialog.show();

With above code, the **dialog** shows at the (about) the center of the screen. 

I am wondering, how can I customize the dialog position to make it showing just under the top Action Bar ? (Is there anyway to change the gravity or something of the dialog?) and how to do it based on my code??

Changing position of the Dialog on screen android

I&#39;m trying to set the theme for a fragment. 

Setting the theme in the manifest does not work:

    android:theme=&quot;@android:style/Theme.Holo.Light&quot;

From looking at previous blogs, it appears as though I have to use a ContextThemeWrapper. Can anyone refer me to a coded example? I can&#39;t find anything. 




Set theme for a Fragment

I&#39;m trying to make an EditText non editable with this code:

    &lt;EditText android:id=&quot;@+id/outputResult&quot;
              android:inputType=&quot;text&quot;
              android:editable=&quot;false&quot;
              android:layout_width=&quot;fill_parent&quot;
              android:layout_height=&quot;wrap_content&quot;
              android:text=&quot;@string/result&quot; /&gt;

I had to add following line to make it non-editable

    android:focusable=&quot;false&quot; 

Am I doing something wrong?

EditText non editable

So I want to get the value of a String in several locales regardless of the current locale setting of the device/app. How should I do that?

Basically what I need is a function `getString(int id, String locale)` rather than `getString(int id)`

How could I do that?

Thanks

how to get string from different locales in Android?

For Array, there is a pretty `sort` method to rearrange the sequence of elements. I want to achieve the same results for a String.

For example, I have a string `str = &quot;String&quot;`, I want to sort it alphabetically with one simple method to `&quot;ginrSt&quot;`.
      
Is there a native way to enable this or should I include mixins from `Enumerable`?

How to sort a string&#39;s characters alphabetically?

Is it possible to split a string every nth character?

For example, suppose I have a string containing the following:

    &#39;1234567890&#39;

How can I get it to look like this:

    [&#39;12&#39;,&#39;34&#39;,&#39;56&#39;,&#39;78&#39;,&#39;90&#39;]



Split string every nth character?

Why doesn&#39;t `&#39;example&#39;[999:9999]` result in error? Since `&#39;example&#39;[9]` does, what is the motivation behind it?

From this behavior I can assume that `&#39;example&#39;[3]` is, essentially/internally, not the same as `&#39;example&#39;[3:4]`, even though both result in the same `&#39;m&#39;` string.

Why does substring slicing with index out of range work?

I&#39;m looking for a way to securely store an API key in a WP7 application. The key is a string and is currently hard coded into the code (see below). I know that someone with a reflector program could easily view this. Is there a better way to package this key as part of my app? Would a resource be more secure?

    string key = &quot;DSVvjankjnersnkaecjnDFSD44VDS23423423rcsedzcadERVSDRFWESDVTsdt&quot;;
(This isn&#39;t actually the key ;) )

Thank you in advance.

How can I securely embed a static string (key) in C#?

I am trying to convert a name from snake case to camel case. Are there any built-in methods?

Eg: `&quot;app_user&quot;` to `&quot;AppUser&quot;`

(I have a string `&quot;app_user&quot;` I want to convert that to model `AppUser`).

Converting string from snake_case to CamelCase in Ruby

I have a list of strings like this:

    [&#39;Aden&#39;, &#39;abel&#39;]

I want to sort the items, case-insensitive.
So I want to get:

    [&#39;abel&#39;, &#39;Aden&#39;]

But I get the opposite with `sorted()` or `list.sort()`, because uppercase appears before lowercase.

How can I ignore the case? I&#39;ve seen solutions which involves lowercasing all list items, but I don&#39;t want to change the case of the list items.



case-insensitive list sorting, without lowercasing the result?

Here is how I check whether `mystring` begins with some string:

    &gt;&gt;&gt; mystring.lower().startswith(&quot;he&quot;)
    True

The problem is that `mystring` is very long (thousands of characters), so the `lower()` operation takes a lot of time.

**QUESTION:** Is there a more efficient way?

My unsuccessful attempt:

    &gt;&gt;&gt; import re;
    &gt;&gt;&gt; mystring.startswith(&quot;he&quot;, re.I)
    False


Case-insensitive string startswith in Python

Is it possible to determine if a String `str1=&quot;ABCDEFGHIJKLMNOP&quot;` contains a string pattern `strptrn=&quot;gHi&quot;`? I wanted to know if that&#39;s possible when the characters are case insensitive. If so, how?

String contains - ignore case

&lt;br/&gt;I have the following data in a Table
&lt;br/&gt;PriceOrderShipped
&lt;br/&gt;PriceOrderShippedInbound
&lt;br/&gt;PriceOrderShippedOutbound
&lt;br/&gt;&lt;br/&gt;In SQL I need to write a query which searches for a string in a table. While searching for  a string it should ignore case. For the below mentioned SQL query

    SELECT DISTINCT COL_NAME FROM myTable WHERE COL_NAME LIKE &#39;%PriceOrder%&#39; 
gives all the above data, whereas

    SELECT DISTINCT COL_NAME FROM myTable WHERE COL_NAME LIKE &#39;%Priceorder%&#39; 
doesn&#39;t give.

Eg. when I search for &#39;PriceOrder&#39; or &#39;priceOrder&#39; it works but &#39;priceorder&#39; or &#39;Priceorder&#39; doesn&#39;t work.
I have tried with the below query using COLLATE, but its not working. Do let me know where im going wrong.

    SELECT DISTINCT COL_NAME FROM myTable WHERE 
    COL_NAME COLLATE latin1_general_cs LIKE &#39;%Priceorder%&#39;



SQL- Ignore case while searching for a string

I&#39;m using Flask-SQLAlchemy to query from a database of users; however, while

    user = models.User.query.filter_by(username=&quot;ganye&quot;).first()

will return

    &lt;User u&#39;ganye&#39;&gt;

doing

    user = models.User.query.filter_by(username=&quot;GANYE&quot;).first()

returns

    None

I&#39;m wondering if there&#39;s a way to query the database in a case insensitive way, so that the second example will still return

    &lt;User u&#39;ganye&#39;&gt;

Case Insensitive Flask-SQLAlchemy Query

I need to modify strings similar to &quot;&#188; cups of sugar&quot; to &quot;cups of sugar&quot;, meaning replacing all fraction symbols with &quot;&quot;.

I have referred to this [post][1] and managed to remove &#188; using this line:

    itemName = itemName.replaceAll(&quot;\u00BC&quot;, &quot;&quot;);

but how do I replace every possible fraction symbol out there?
  [1]: https://stackoverflow.com/questions/16838352/how-to-remove-%C2%BC-and-%C2%BD-from-a-string

Content Type	Original Author	Original Content on Stackoverflow
Question	Sabre	View Question on Stackoverflow
Solution 1 - Java	shift66	View Answer on Stackoverflow
Solution 2 - Java	Chris Ociepa	View Answer on Stackoverflow
Solution 3 - Java	Zarius	View Answer on Stackoverflow

How to change spaces to underscore and make string case insensitive?

Java Problem Overview

Java Solutions

Solution 1 - Java

Solution 2 - Java

Solution 3 - Java

Why does rand() yield the same sequence of numbers on every run?

Python alternative to reduce()

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