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What's the best practice to round a float to 2 decimals? [duplicate]
...that allows you to round a number to the number of decimals that you want. Now you need two, but maybe you would like to try with 3 to compare results, and this function gives you this freedom.
/**
* Round to certain number of decimals
*
* @param d
* @param decimalPlace
* @return
*/
public stati...
notifyDataSetChanged example
... is still holding a reference to the original List. The Adapter does not know you changed the List in the Activity.
Your choices are:
Use the functions of the ArrayAdapter to modify the underlying List (add(), insert(), remove(), clear(), etc.)
Re-create the ArrayAdapter with the new List data. ...
Regular vs Context Free Grammars
...copies of y.) You basically have one "nonterminal" that can be expanded.
Now, what about context-free languages? There's an analogous pumping lemma for context-free languages that breaks the strings in the language into five parts, uvxyz, and where all instances of the language are in uvixyiz, fo...
unresolved reference to object [INFORMATION_SCHEMA].[TABLES]
...d reference it via .\SharedSchemas\master.dacpac. That's probably resolved now, but was an issue in the first release.
– Peter Schott
Aug 7 '13 at 22:26
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Modify SVG fill color when being served as Background-Image
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This answer was great as of 2012, but now CSS masks and/or filters have been supported in all browsers for some time. I recommend that anyone reading this now check out the links in widged's answer below or just skip to CSS Masks here, which is a really easy solu...
Is there a CSS selector for the first direct child only?
...erited by that div's children divs:
div.section > div { color: red }
Now, both that div and its children will be red. You need to cancel out whatever you set on the parent if you don't want it to inherit:
div.section > div { color: red }
div.section > div div { color: black }
Now only...
Conversion of a datetime2 data type to a datetime data type results out-of-range value
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I changed my datacolumns and used typeof now... Further I found my problem. there was 1 datarow that contained a wrong date, which triggered the error
– Gerbrand
Aug 26 '09 at 5:46
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How to validate IP address in Python? [duplicate]
... representations of IP addresses.
If you're using Python 3.3 or later, it now includes the ipaddress module:
>>> import ipaddress
>>> ipaddress.ip_address('127.0.0.1')
IPv4Address('127.0.0.1')
>>> ipaddress.ip_address('277.0.0.1')
Traceback (most recent call last):
Fil...
CSS way to horizontally align table
I want to show a table of fixed width at the center of browser window. Now I use
10 Answers
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Why aren't pointers initialized with NULL by default?
...ion point was he/she needed to perform some operation and then assign.
So now we have the situation that the compiler has added an extra instruction to the code that initializes the variable to NULL then later the developer code is added to do the correct initialization. Or under other conditions t...