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Default value of 'boolean' and 'Boolean' in Java
...is no default for Boolean. Boolean must be constructed with a boolean or a String. If the object is unintialized, it would point to null.
The default value of primitive boolean is false.
http://download.oracle.com/javase/6/docs/api/java/lang/Boolean.html
https://docs.oracle.com/javase/tutorial/jav...
How to trigger a file download when clicking an HTML button or JavaScript
...
Best and most clean solution. But you do not need any extra Javascript here. HTML part with the onclick is enough.
– Florian Leitgeb
Jan 23 '15 at 13:06
4
...
What does the “Just” syntax mean in Haskell?
...r integer functions that are meant to return Natural numbers (for example, String.indexOf - when a substring is not found, the returned index is commonly designed to be negative)
return a special value (pointer): NULL or some such
silently return without doing anything: for example, lend could be wr...
How do I find the width & height of a terminal window?
... wrapper for that. E.g in Perl you can use Term::Size:
use Term::Size qw( chars );
my ( $columns, $rows ) = chars \*STDOUT;
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How do I dynamically assign properties to an object in TypeScript?
...n interface could be defined as follows.
interface LooseObject {
[key: string]: any
}
var obj: LooseObject = {};
OR to make it compact:
var obj: {[k: string]: any} = {};
LooseObject can accept fields with any string as key and any type as value.
obj.prop = "value";
obj.prop2 = 88;
The real e...
What is the source code of the “this” module doing?
...r) chars.
print "".join([d.get(c, c) for c in s])
Prints the translated string.
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How to append rows to an R data frame
...<- function(n){
df <- data.frame(x = numeric(n), y = character(n), stringsAsFactors = FALSE)
for(i in 1:n){
df$x[i] <- i
df$y[i] <- toString(i)
}
df
}
Here's a similar approach, but one where the data.frame is created as the last step.
# Use preallocated vectors
f4 <...
How do I override __getattr__ in Python without breaking the default behavior?
...nd potentially miss the upstream changes should the wording be modified or extra context added to the exception object in future.
– wim
Nov 26 '18 at 19:56
...
Calendar Recurring/Repeating Events - Best Storage Method
...e | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+-------+--------+---------------+---------+---------+------------------+------+--------------------------------+
| 1 | SIMPLE | EM1 | ALL | NULL | NULL ...
Specifying Style and Weight for Google Fonts
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for semi-bold
font-weight:600;
for bold (700)
font-weight:bold;
for extra bold (800)
font-weight:800;
Like this its fallback proof, so if the google font should "fail" your backup font Arial/Helvetica(Sans-serif) use the same weight as the google font.
Pretty smart :-)
Note that the diff...