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How do I modify fields inside the new PostgreSQL JSON datatype?
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Edit 2: as @ErwinBrandstetter noted these functions above works like a so-called UPSERT (updates a field if it exists, inserts if it does not exist). Here is a variant, which only UPDATE:
CREATE OR REPLACE FUNCTION "json_object_update_key"(
"json" json,
"key_to_set" TEXT,
"value_t...
Differences between Proxy and Decorator Pattern
...tee. Decorator is a strict subset of Proxy, but a Decorator might still be called a Proxy depending on whether the underlying API is guaranteed to be the same.
– cdunn2001
Aug 27 '15 at 23:28
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Best way to check if a Data Table has a null value in it
... an "Extensions" folder in some common library or in my DAL. Create a file called "DataTableExtensions.cs" and add that method. Next you would just add "using Name.Space.Extensions" to your cs files and have access to all extension methods defined.
– hunter
Jan...
urlencode vs rawurlencode?
...str_len, 0);
}
Okay, so what's different here?
They both are in essence calling two different internal functions respectively: php_raw_url_encode and php_url_encode
So go look for those functions!
Lets look at php_raw_url_encode
PHPAPI char *php_raw_url_encode(char const *s, int len, int *new_...
Android:What is difference between setFlags and addFlags for intent
...uted by the Intent.It returns the same intent object for chaining multiple calls into a single statement.
intent.addFlags(int num);
This helps to add additional flags to a particular intent with the existing values.this also returns the same intent object for chaining multiple calls into a single...
What's the difference between the WebConfigurationManager and the ConfigurationManager?
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WebConfigurationManager is made specifically for ASP.NET applications.
WebConfigurationManager provides additional methods to load configuration files applicable to Web applications.
ConfigurationManager provides also methods to load configuration files applicab...
Differences between action and actionListener
...ws and logs, but actually publishes the exception.
This happens through a call like this:
context.getApplication().publishEvent(context, ExceptionQueuedEvent.class,
new ExceptionQueuedEventContext(context, exception, source, phaseId)
);...
wkhtmltopdf: cannot connect to X server
...to run it headless on a 'virtual' x server. We will do this with a package called xvfb.
sudo apt-get install xvfb
We need to write a little shell script to wrap wkhtmltopdf in xvfb. Make a file called wkhtmltopdf.sh and add the following:
xvfb-run -a -s "-screen 0 640x480x16" wkhtmltopdf "$@"
M...
AngularJS - Multiple ng-view in single template
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What about dynamically changing the content of a widget? Wouldn't you want to create a view for the widget and a controller for the widget and a model for the widget?
– Ray Suelzer
Oct 14 '13 at 14:34
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Difference between `set`, `setq`, and `setf` in Common Lisp?
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I would like to add to previous answers that setf is macro that call specific function depending on what was passed as its first argument.
Compare results of macro expansion of setf with different types of arguments:
(macroexpand '(setf a 1))
(macroexpand '(setf (car (list 3 2 1)) 1))
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