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Postgres: INSERT if does not exist already
...sert on this blog (in the updated area at the bottom) including some links if you want to read more about the details.
– Skyguard
Apr 1 '17 at 16:03
22
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How to tell Jackson to ignore a field during serialization if its value is null?
How can Jackson be configured to ignore a field value during serialization if that field's value is null.
19 Answers
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Check if string contains only digits
I want to check if a string contains only digits. I used this:
14 Answers
14
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When to use Cast() and Oftype() in Linq
...y be cast to type x.
Cast - will try to cast all the elements into type x. if some of them are not from this type you will get InvalidCastException
EDIT
for example:
object[] objs = new object[] { "12345", 12 };
objs.Cast<string>().ToArray(); //throws InvalidCastException
objs.OfType<stri...
CA2202, how to solve this case
... return result.ToArray();
}
finally
{
if (memoryStream != null)
memoryStream.Dispose();
if (cryptograph != null)
cryptograph.Dispose();
if (cryptoStream != null)
cryptoStream.Dispose();
...
How to show a confirm message before delete?
... a confirm message on clicking delete (this maybe a button or an image). If the user selects ' Ok ' then delete is done, else if ' Cancel ' is clicked nothing happens.
...
execute function after complete page load
...ener('DOMContentLoaded', function() {
// your code here
}, false);
or
if your comfort with jquery,
$(document).ready(function(){
// your code
});
$(document).ready() fires on DOMContentLoaded, but this event is not being fired consistently among browsers. This is why jQuery will most probabl...
Retrieve filename from file descriptor in C
...ll give you the name of the file as it was when it was opened — however, if the file was moved or deleted since then, it may no longer be accurate (although Linux can track renames in some cases). To verify, stat the filename given and fstat the fd you have, and make sure st_dev and st_ino are the...
Android: why is there no maxHeight for a View?
...ults needed for my layout. And it also addresses the comment by madhu.
If some layout present below the scrollview then this trick wont work – madhu Mar 5 at 4:36
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How often to commit changes to source control? [closed]
...n 15-60 minutes. Sometimes it could be longer, but I always try to checkin if I have a lot of code changes that I wouldn't want to rewrite in case of failure. I also usually make sure my code compiles and I check-in at the end of the work day before I go home.
I wouldn't worry about making "too man...