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What do 3 dots next to a parameter type mean in Java?
...5. It means that function can receive multiple String arguments:
myMethod("foo", "bar");
myMethod("foo", "bar", "baz");
myMethod(new String[]{"foo", "var", "baz"}); // you can even pass an array
Then, you can use the String var as an array:
public void myMethod(String... strings){
for(String wh...
Adding console.log to every function automatically
...Class {
a() {
this.aa = 1;
}
b() {
this.bb = 1;
}
}
const foo = new TestClass()
foo.a() // nothing get logged
we can replace our class instantiation with a Proxy that overrides each property of this class. so:
class TestClass {
a() {
this.aa = 1;
}
b() {
this.bb = 1...
Is there a function in python to split a word into a list? [duplicate]
...
The list function will do this
>>> list('foo')
['f', 'o', 'o']
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How to select multiple rows filled with constants?
...ostgreSQL you may want to try this syntax
SELECT constants FROM (VALUES ('foo@gmail.com'), ('bar@gmail.com'), ('baz@gmail.com')) AS MyTable(constants)
You can also view an SQL Fiddle here: http://www.sqlfiddle.com/#!17/9eecb/34703/0
...
ExpressJS How to structure an application?
... extension naming conventions to distinguish tests from production code.
foo.js has the module "foo"'s code
foo.tape.js has the node-based tests for foo and lives in the same dir
foo.btape.js can be used for tests that need to execute in a browser environment
I use filesystem globs and the find ...
Should import statements always be at the top of a module?
...odule with a unit test of the form:
if __name__ == '__main__':
import foo
aa = foo.xyz() # initiate something for the test
Secondly, you might have a requirement to conditionally import some different module at runtime.
if [condition]:
import foo as plugin_api
else:
impor...
What's the difference between echo, print, and print_r in PHP?
...used in an expression
e.g. print "Hello"
or, if ($expr && print "foo")
print_r()
Outputs a human-readable representation of any one value
Accepts not just strings but other types including arrays and objects, formatting them to be readable
Useful when debugging
May return its output as...
How do I break out of a loop in Perl?
...
Additional data (in case you have more questions):
FOO: {
for my $i ( @listone ){
for my $j ( @listtwo ){
if ( cond( $i,$j ) ){
last FOO; # --->
# |
} ...
Test if something is not undefined in JavaScript
...
typeof:
var foo;
if (typeof foo == "undefined"){
//do stuff
}
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Best practice for partial updates in a RESTful service
...tch-like-an-idiot PATCH [ { "op": "test", "path": "/a/b/c", "value": "foo" }, { "op": "remove", "path": "/a/b/c" }, { "op": "add", "path": "/a/b/c", "value": [ "foo", "bar" ] }, { "op": "replace", "path": "/a/b/c", "value": 42 }, { "op": "move", "from": "/a/b/c", "path": "/a/b/d...