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What is the difference between JavaConverters and JavaConversions in Scala?
... will be implicitly added to the collection that you want to transform. In order to use these converters, you need to import :
import collection.JavaConverters._
You should prefer JavaConversions as it's generally easier to use (no need to use asScala or asJava).
...
How do I query using fields inside the new PostgreSQL JSON datatype?
...less there are quite specialized needs, such as legacy
assumptions about ordering of object keys.
Bold emphasis mine.
Performance benefits from general improvements to GIN indexes.
Postgres 9.5
Complete jsonb functions and operators. Add more functions to manipulate jsonb in place and for dis...
Printf width specifier to maintain precision of floating-point value
... the number of digits after the lead digit and decimal point.
So - 1 is in order. Note: This -1 is not in the initial int Digs = DECIMAL_DIG;
printf("%.*e\n", OP_DBL_Digs - 1, OneSeventh);
// 1.4285714285714285e-01
With "%f", the precision field is the number of digits after the decimal point.
F...
In Python, how does one catch warnings as if they were exceptions?
...
You don't need the filterwarnings call in order to catch Warnings, at least in python 3. it just works.
– naught101
Apr 3 '19 at 6:37
1
...
How to create a drop shadow only on one side of an element?
...hat the black shadow must be the last, and has a negative spread (-3px) in order to prevent it from extendig beyond the corners.
Here the fiddle (change the color of the masking shadows to see how it really works).
div{
width: 100px;
height: 100px;
border: 1px solid pink;
b...
iPhone: Detecting user inactivity/idle time since last screen touch
...xceeded");
}
where maxIdleTime and idleTimer are instance variables.
In order for this to work, you also need to modify your main.m to tell UIApplicationMain to use your delegate class (in this example, AppDelegate) as the principal class:
int retVal = UIApplicationMain(argc, argv, @"AppDelegate...
Converting between strings and ArrayBuffers
...and Opera 41, no
other encoding types are available other than utf-8, in order to match
the spec.*
*) Updated specs (W3) and here (whatwg).
After creating an instance of the TextEncoder it will take a string and encode it using a given encoding parameter:
if (!("TextEncoder" in window)) ...
Better way to set distance between flexbox items
...ox doesn't have collapsing margins.
Flexbox doesn't have anything akin to border-spacing for tables (except for CSS property gap which isn't supported in Safari, caniuse)
Therefore achieving what you are asking for is a bit more difficult.
In my experience, the "cleanest" way that doesn't use :firs...
Guid is all 0's (zeros)?
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...
Why is address zero used for the null pointer?
... code you will still continue to designate null-pointers by constant 0. In order to assign a null-pointer value to a given pointer, you will continue to use expressions like p = 0. It is the compiler's responsibility to realize what you want and translate it into the proper null-pointer value repres...