Use the format string `&quot;img_%03d.jpg&quot;` to get decimal numbers with three digits and leading zeros.

For posterity: this works with decimal numbers.

    NSString *nmbrStr = @&quot;0033620340000&quot; ;
    NSDecimalNumber *theNum = [[NSDecimalNumber decimalNumberWithString:nmbrStr]decimalNumberByAdding: [NSDecimalNumber one]] ; 	
    NSString *fmtStr = [NSString stringWithFormat:@&quot;%012.0F&quot;,[theNum doubleValue]] ;

Though this information is hard to find, it is actually documented here in the second paragraph under Formatting Basics.  Look for the % character.

https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Strings/Articles/FormatStrings.html



Is there a way to get the current version of ASP.NET MVC in code? Reflecting on MVC assemblies is needed? Any new IIS server variables? Some property to read in HTTP context?

How to determine the current version of ASP.NET MVC?

null coalescing translates roughly to `return x, unless it is null, in which case return y`

I often need `return null if x is null, otherwise return x.y`

I can use `return x == null ? null : x.y;`

Not bad, but that `null` in the middle always bothers me -- it seems superfluous. I&#39;d prefer something like `return x :: x.y;`, where what follows the `::` is evaluated only if what precedes it is not `null`.

I see this as *almost* an opposite to null coalescence, kind of mixed in with a terse, inline null-check, but I&#39;m [*almost*] certain that there is no such operator in C#.

### Are there other languages that have such an operator? If so, what is it called? ###


*(I know that I can write a method for it in C#; I use `return NullOrValue.of(x, () =&gt; x.y);`, but if you have anything better, I&#39;d like to see that too.)*

Is there an &quot;opposite&quot; to the null coalescing operator? (…in any language?)

I want to convert an integer value to a string with leading zeroes (if necessary) such that the string has 3 total characters. For example, `5` would become `&quot;005&quot;`, and `10` would become `&quot;010&quot;`.

I&#39;ve tried this code:

    NSString* strName = [NSString stringWithFormat:@&quot;img_00%d.jpg&quot;, i];

This partially works, but if `i` has the value of `10`, for example, the result is `img_0010.jpg`, not `img_010.jpg`.

Is there a way to do what I want?

Format string, integer with leading zeros

I want to convert an integer value to a string with leading zeroes (if necessary) such that the string has 3 total characters. For example, <code>5</code> would become <code>"005"</code>, and <code>10</code> would become <code>"010"</code>.
I've tried this code:
<pre><code class="hljs language-ini">NSString* strName = [NSString stringWithFormat:@"img_00%d.jpg", i];
</code></pre>
This partially works, but if <code>i</code> has the value of <code>10</code>, for example, the result is <code>img_0010.jpg</code>, not <code>img_010.jpg</code>.
Is there a way to do what I want?

`UIBarButtonItem` does not extend `UIView`, so there is nothing like a frame property.

But is there any way I can get what is it&#39;s `CGRect` frame, relative to the application `UIWindow`?

Figure out UIBarButtonItem frame in window?

Is there a simple way to delete all the annotations on a map without iterating through all the displayed annotations in Objective-c?

How to delete all Annotations on a MKMapView

Let&#39;s say we have a view controller with one sub view. the subview takes up the center of the screen with 100 px margins on all sides. We then add a bunch of little stuff to click on inside that subview. We are only using the subview to take advantage of the new frame ( x=0, y=0 inside the subview is actually 100,100 in the parent view). 

Then, imagine that we have something behind the subview, like a menu. I want the user to be able to select any of the &quot;little stuff&quot; in the subview, but if there is nothing there, I want touches to pass through it (since the background is clear anyway) to the buttons behind it. 

How can I do this? It looks like touchesBegan goes through, but buttons don&#39;t work. 

How can I click a button behind a transparent UIView?

Is it possible to rename/refactor a class file and have it rename the actual file on disk? If so, how can I do this?

Rename or refactor files in Xcode

I am trying create an accordion type of uitableviewcell that, when the user selects the cell, it expands to display a detailed info view inline similar to how the digg app works. I initially tried replacing the current tablecell with a customcell in cellForRowAtIndex, however the animation looks a bit choppy as you can see the cell being replaced and overall the effect doesn&#39;t work too well.

If you look at the digg app and others who have done this it seems that they aren&#39;t replacing the current cell but instead perhaps adding a subview to the cell? The original cell however doesn&#39;t seem to animate at all and only the new view accordions into the table.

Does anyone have any ideas how to accomplish a similar effect?

I have made some progress using neha&#39;s method below and while the cell is animating the correct way it is wreaking havoc with the other cells in the table. What I have done is subclassed UITableViewCell with a custom class which contains an instance of a UIView which actually draws the view which I then add to the table cell&#39;s contentview. 

    - (void)setSelected:(BOOL)selected animated:(BOOL)animated {
   
  	if (selected) {	
	    [self expandCell];
  	}
    }

    -(void)expandCell {	
        self.contentView.frame = CGRectMake(0.0, 0.0, self.contentView.bounds.size.width, 110);
    }


Here are all the table delegate methods I am using:


    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
		
	if (isSearching &amp;&amp; indexPath.row == selectedIndex) {
		
		static NSString *CellIdentifier = @&quot;SearchCell&quot;;
		CustomTableCell *cell = (CustomTableCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
		if (cell == nil) {
			cell = [[[CustomTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
		}
		
		[cell setCustomTitle:[timeZoneNames objectAtIndex:indexPath.row] detail:[timeZoneNames objectAtIndex:indexPath.row]];
	
	    UILabel *theText = [[UILabel alloc] initWithFrame:CGRectMake(10.0, 10.0, cell.contentView.bounds.size.width -20, 22.0)];
	    theText.text = @&quot;Title Text&quot;;
	    [cell.contentView addSubview:theText];
	
	
	    UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(10.0, 10 + 46.0, cell.contentView.bounds.size.width - 20, 40.0)];
	    textField.borderStyle = UITextBorderStyleLine;
	    [cell.contentView addSubview:textField];		
	
	    UILabel *testLabel = [[UILabel alloc] initWithFrame:CGRectMake(5.0, 88.0, cell.contentView.bounds.size.width - 20, 22.0)];
	    testLabel.text = [NSString stringWithFormat:@&quot;Some text here&quot;];
	    [cell.contentView addSubview:testLabel];
	
	    [theText release];
	    [textField release];
	    [testLabel release];

	    return cell; 		
	} else {
		
		static NSString *CellIdentifier = @&quot;Cell&quot;;
		CustomTableCell *cell = (CustomTableCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
		if (cell == nil) {
			cell = [[[CustomTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
		}

		[cell setCustomTitle:[timeZoneNames objectAtIndex:indexPath.row] detail:[timeZoneNames objectAtIndex:indexPath.row]];
		return cell; 
	}


    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	
	[tableView deselectRowAtIndexPath:indexPath animated:NO];	
	
	selectedIndex = indexPath.row;
	isSearching = YES;
	

	[tableView beginUpdates];
	[tableView endUpdates];
	
    }


    - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {		
	if (isSearching &amp;&amp; indexPath.row == selectedIndex) {
		return 110;
	}
	return rowHeight;			
    } 


It seems now that the cell is expanding but not actually being refreshed so the labels, and textfield aren&#39;t being shown. They do however show up when I scroll the cell off and on the screen.  

Any ideas?

Accordion table cell - How to dynamically expand/contract uitableviewcell?

I noticed a Python script I was writing was acting squirrelly, and traced it to an infinite loop, where the loop condition was `while line is not &#39;&#39;`. Running through it in the debugger, it turned out that line was in fact `&#39;&#39;`. When I changed it to `!=&#39;&#39;` rather than `is not &#39;&#39;`, it worked fine. 

Also, is it generally considered better to just use &#39;==&#39; by default, even when comparing int or Boolean values? I&#39;ve always liked to use &#39;is&#39; because I find it more aesthetically pleasing and pythonic (which is how I fell into this trap...), but I wonder if it&#39;s intended to just be reserved for when you care about finding two objects with the same id.

String comparison in Python: is vs. ==

How can I extract a substring using PowerShell?

I have this string ...

    &quot;-----start-------Hello World------end-------&quot;

I have to extract ...

    Hello World

What is the best way to do that?


Extract a substring using PowerShell

I simply have a string that looks something like this:

&quot;7,true,NA,false:67,false,NA,false:5,false,NA,false:5,false,NA,false&quot;

All I want to do is to count how many times the string &quot;**true**&quot; appears in that string. I&#39;m feeling like the answer is something like `String.CountAllTheTimesThisStringAppearsInThatString()` but for some reason I just can&#39;t figure it out. Help?

Count the number of times a string appears within a string

I&#39;m looking for a way to limit a string in php and add on ... at the end if the string was too long.


Limit String Length

Say you have a String literal with a lot of quotation marks inside it. You could escape them all, but it&#39;s a pain, and difficult to read.

In some languages, you can just do this:

    foo = &#39;&quot;Hello, World&quot;&#39;;

In Java, however, `&#39;&#39;` is used for `char`s, so you can&#39;t use it for `String`s this way. Some languages have syntax to work around this. For example, in python, you can do this:

    &quot;&quot;&quot;A pretty &quot;convenient&quot; string&quot;&quot;&quot;

Does Java have anything similar?

In Java, is there a way to write a string literal without having to escape quotes?

I really don&#39;t like this style of formatting:

    Class AwesomeClass
    {
        private static void AwesomeMethod()
        {
    
        }
    
    }

Can I make it format my code like this?

    Class AwesomeClass {

        private static void AwesomeMethod() {
    
        }
    }


How can I set Visual Studio to use K&amp;R style bracketing?

Is there a display formatter that will output decimals as these string representations in c# without doing any rounding?

    // decimal -&gt; string

    20 -&gt; 20
    20.00 -&gt; 20
    20.5 -&gt; 20.5
    20.5000 -&gt; 20.5
    20.125 -&gt; 20.125
    20.12500 -&gt; 20.125
    0.000 -&gt; 0

{0.#} will round, and using some Trim type function will not work with a bound numeric column in a grid.

Best way to display decimal without trailing zeroes

I am new to Python&#39;s logging package and plan to use it for my project. I would like to customize the time format to my taste. Here is a short code I copied from a tutorial:


    import logging
    
    # create logger
    logger = logging.getLogger(&quot;logging_tryout2&quot;)
    logger.setLevel(logging.DEBUG)
    
    # create console handler and set level to debug
    ch = logging.StreamHandler()
    ch.setLevel(logging.DEBUG)
    
    # create formatter
    formatter = logging.Formatter(&quot;%(asctime)s;%(levelname)s;%(message)s&quot;)
    
    # add formatter to ch
    ch.setFormatter(formatter)
    
    # add ch to logger
    logger.addHandler(ch)
    
    # &quot;application&quot; code
    logger.debug(&quot;debug message&quot;)
    logger.info(&quot;info message&quot;)
    logger.warn(&quot;warn message&quot;)
    logger.error(&quot;error message&quot;)
    logger.critical(&quot;critical message&quot;)

And here is the output:

    2010-07-10 10:46:28,811;DEBUG;debug message
    2010-07-10 10:46:28,812;INFO;info message
    2010-07-10 10:46:28,812;WARNING;warn message
    2010-07-10 10:46:28,812;ERROR;error message
    2010-07-10 10:46:28,813;CRITICAL;critical message

I would like to shorten the time format to just: &#39;`2010-07-10 10:46:28`&#39;, dropping the mili-second suffix. I looked at the Formatter.formatTime, but confused. I appreciate your help to achieve my goal. Thank you.


How to Customize the time format for Python logging?

I have some fixed strings inside my `strings.xml`, something like:

    &lt;resources&gt;
    	&lt;string name=&quot;somestring&quot;&gt;
    		&lt;B&gt;Title&lt;/B&gt;&lt;BR/&gt;
    		Content
    	&lt;/string&gt;
    &lt;/resources&gt;

and in my layout I&#39;ve got a `TextView` which I&#39;d like to fill with the html-formatted string.

    &lt;TextView android:id=&quot;@+id/formattedtext&quot;
    android:layout_width=&quot;fill_parent&quot;
    android:layout_height=&quot;wrap_content&quot;
    android:text=&quot;@string/htmlstring&quot;/&gt;

if I do this, the content of `formattedtext` is just the content of `somestring` stripped of any html tags and thus unformatted.

I know that it is possible to set the formatted text programmatically with 

`.setText(Html.fromHtml(somestring));` 

because I use this in other parts of my program where it is working as expected.

To call this function I need an `Activity`, but at the moment my layout is just a simple more or less static view in plain XML and I&#39;d prefer to leave it that way, to save me from the overhead of creating an `Activity` just to set some text.

Am I overlooking something obvious? Is it not possible at all? Any help or workarounds welcome!

Edit: Just tried some things and it seems that HTML formatting in xml has some restraints: 

- tags must be written lowercase 

- some tags which are mentioned [here][1]  do not work, e.g. `&lt;br/&gt;` (it&#39;s possible to use `\n` instead)


  [1]: https://stackoverflow.com/questions/3207769/android-textview-with-html-seperator

Set TextView text from html-formatted string resource in XML

Is it possible to set the color of just span of text in a TextView?

I would like to do something similar to the Twitter app, in which a part of the text is blue. See image below:

[![alt text][1]][1]  
&lt;sub&gt;(source: [twimg.com](https://g.twimg.com/blog/s1600/ss-localsearch.png))&lt;/sub&gt;  



  [1]: https://i.stack.imgur.com/rq1ZY.png

Content Type	Original Author	Original Content on Stackoverflow
Question	ghiboz	View Question on Stackoverflow
Solution 1 - Objective C	Gumbo	View Answer on Stackoverflow
Solution 2 - Objective C	McUsr	View Answer on Stackoverflow

Format string, integer with leading zeros

Objective C Problem Overview

Objective C Solutions

Solution 1 - Objective C

Solution 2 - Objective C

Is there an "opposite" to the null coalescing operator? (…in any language?)

How to determine the current version of ASP.NET MVC?

Attributions