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MySQL SELECT only not null values
...uld use IS NOT NULL. (The comparison operators = and <> both give UNKNOWN with NULL on either side of the expression.)
SELECT *
FROM table
WHERE YourColumn IS NOT NULL;
Just for completeness I'll mention that in MySQL you can also negate the null safe equality operator but this is not sta...
How to compare two revisions in Bitbucket?
...
Bitbucket supports comparing tags now.
https://bitbucket.org/<OWNER>/<PROJECT>/branches/compare/<tag1>%0D<tag2>
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Cross-thread operation not valid: Control accessed from a thread other than the thread it was create
...Contrl1_LOadDataMethod()
{
if(textbox1.text=="MyName") //<<======Now it wont give exception**
{
//Load data correspondin to "MyName"
//Populate a globale variable List<string> which will be
//bound to grid at some later stage
if(InvokeRequired)
...
Reading ePub format
...rting out:
parse xml
unzip
To display content just use a UIWebView for now.
Here's a high level step by step for your code:
1) create a view with a UIWebView
2) download the EPUB file
3) unzip it to a subdirectory in your app's documents folder using the zip library, linked above
4) parse t...
How to create a directory and give permission in single command
...r is much better because it spawns one process instead of three. I didn't know about the -m option.
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What's the best way to communicate between view controllers?
...the book data? Let's say it depends on a BookWarehouse object for that. So now your controller is basically brokering data between a model object (BookWarehouse) and the GUI/view objects. In other words, BookPickerViewController DEPENDS on the BookWarehouse object.
Don't do this:
@implementation B...
Change color of PNG image via CSS?
...image to grayscale, sepia and lot more (look at the example).
So you can now change the color of a PNG file with filters.
body {
background-color:#03030a;
min-width: 800px;
min-height: 400px
}
img {
width:20%;
float:left;
margin:0;
}
/*Filter styles*/
.sat...
How to get JavaScript caller function line number? How to get JavaScript caller source URL?
...
Hi, Thanks for that addon. do you know if its possible to get line number from previous call ? Lets say method A calls B , and now in B I would like to know in what line under A the call was made?
– Tal
Aug 30 '09 at 11:1...
Determine what attributes were changed in Rails after_save callback?
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I think after_update is deprecated now? Anyway, I tried this in an after_save hook and that seemed to work fine. (The changes() hash still hasn't been reset yet in an after_save, apparently.)
– Tyler Rick
Mar 14 '13 at 5:...
Avoid modal dismiss on enter keypress
...n to be fired. I changed it to an anchor instead and it works as expected now (enter submits the form and does not close the modal).
<a class="close" data-dismiss="modal">&times;</a>
Without seeing your source, I can't confirm that your cause is the same though.
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