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Creating a singleton in Python
...t will only be called once, when the only instance is created. You want to customize what it means to call the class, which is decided by it's type.
In general, it makes sense to use a metaclass to implement a singleton. A singleton is special because is created only once, and a metaclass is the way...
How to elegantly deal with timezones
...eated { get; set; }
...
}
2 - In a global helper we make our custom function "ToLocalTime":
public static DateTime ToLocalTime(DateTime utcDate)
{
var localTimeZoneId = "China Standard Time";
var localTimeZone = TimeZoneInfo.FindSystemTimeZoneById(localTimeZone...
How do you change text to bold in Android?
... use specific fonts sans, serif & monospace via xml, Java code can use custom fonts
android:typeface="monospace" // or sans or serif
Programmatically (Java code)
TextView textView = (TextView) findViewById(R.id.TextView1);
textView.setTypeface(Typeface.SANS_SERIF); //only font style
textVie...
CodeIgniter activerecord, retrieve last insert id?
...t can be return insert id it is
// similar to the mysql_insert_id in core PHP
You can refer this link you can find some more stuff.
Information from executing a query
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Want to find records with no associated records in Rails
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If you're using a custom table name in your Friend model ( self.table_name = "custom_friends_table_name"), then use Person.includes(:friends).where(:custom_friends_table_name => {:id => nil}) .
– Zek
...
How do I initialize a TypeScript object with a JSON object
...lization is not possible with it. For example, if a class property is of a custom class type, JSON.parse + Object.assign will instantiate that property to Object. Side-effects include missing methods and accessors.
– John Weisz
Jan 4 '17 at 14:32
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What is the best way to profile javascript execution? [closed]
... profile block. See the console API here: http://getfirebug.com/wiki/index.php/Console_API
Blackbird
Blackbird (official site) also has a simpler profiler (can be downloaded from here)
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Is there a good JavaScript minifier? [closed]
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If you are using PHP you might also want to take a look at minify which can minify and combine JavaScript files. The integration is pretty easy and can be done by defined groups of files or an easy query string. Minified files are also cached...
ASP.NET web.config: configSource vs. file attributes
...le attribute
Specifies a relative path to an external file that contains custom application configuration settings
specific to the appSettings section
will merge (and override) settings in the .config file
will not cause web application to restart when modifying the specified file
http://msdn.micr...
How do I remove newlines from a text file?
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Using man 1 ed:
# cf. http://wiki.bash-hackers.org/doku.php?id=howto:edit-ed
ed -s file <<< $'1,$j\n,p' # print to stdout
ed -s file <<< $'1,$j\nwq' # in-place edit
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