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How do I fix "The expression of type List needs unchecked conversion…'?
...common problem when dealing with pre-Java 5 APIs. To automate the solution from erickson, you can create the following generic method:
public static <T> List<T> castList(Class<? extends T> clazz, Collection<?> c) {
List<T> r = new ArrayList<T>(c.size());
...
JSON left out Infinity and NaN; JSON status in ECMAScript?
...ethods in order to implement such a thing. Not sure where your serializing from, so I can't give details on how to implement it in the serialization methods.
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Flexbox: center horizontally and vertically
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When flex items are stacked horizontally:
Adjust the flex-direction rule from the code above.
#container {
display: flex;
flex-direction: row; /* make main axis horizontal (default setting) */
justify-content: center; /* center items horizontally, in this case */
align-items: ...
Calc of max, or max of calc in CSS
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No you cannot. max() and min() have been dropped from CSS3 Values and Units. They may be re-introduced in CSS4 Values and Units however. There is currently no spec for them, and the calc() spec does not mention that either are valid inside a calc() function.
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Overriding superclass property with different type in Swift
...ow to override a property on a superclass's with another object subclassed from the original property?
14 Answers
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Reorder levels of a factor without changing order of values
... for manipulating factors and I'm finding it outrageously useful. Examples from the OP's data frame:
levels(df$letters)
# [1] "a" "b" "c" "d"
To reverse levels:
library(forcats)
fct_rev(df$letters) %>% levels
# [1] "d" "c" "b" "a"
To add more levels:
fct_expand(df$letters, "e") %>% leve...
Struct constructor: “fields must be fully assigned before control is returned to the caller.”
...uct that has an automatic property, just call the parameterless contructor from your parameterized one by doing : this() example below:
struct MyStruct
{
public int SomeProp { get; set; }
public MyStruct(int someVal) : this()
{
this.SomeProp = someVal;
}
}
By calling :this() from yo...
Vim: Close All Buffers But This One
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You could use this script from vim.org:
http://www.vim.org/scripts/script.php?script_id=1071
Just put it to your .vim/plugin directory and then use :BufOnly command to close all buffers but the active one. You could also map it elsewhere you like in...
MenuItemCompat.getActionView always returns null
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Finally I found the solution.
Changing namespace of actionViewClass from android:actionViewClass to app:actionViewClass
Implementing android.support.v7.widget.SearchView.OnQueryTextListener interface for current activity.
Directly use setOnQueryTextListener instead of SearchViewCompat.setOnQ...
How to send a command to all panes in tmux?
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this is bash, but can one do the same from the tmux command prompt, I mean by doing prefix + :
– Rho Phi
Apr 25 '16 at 17:15
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