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How to use arguments from previous command?
... Just a word of warning - if you use combined arguments like echo foo{,bar} baz, the command is recorded as printed and expands afterwards. With the above, using echo !:1 after resolves to echo foo{,bar} and then expands to echo foo foobar
– Sean
Jul 1...
Check existence of directory and create if doesn't exist
...exist")
# Handle this error as appropriate
}
Also be aware that if ~/foo doesn't exist then a call to dir.create('~/foo/bar') will fail unless you specify recursive = TRUE.
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improve thi...
Define global variable in a JavaScript function
...eclare a global variable:
<script>
var yourGlobalVariable;
function foo() {
// ...
}
</script>
Alternately, you can assign to a property on window:
<script>
function foo() {
window.yourGlobalVariable = ...;
}
</script>
...because in browsers, all global variable...
'AND' vs '&&' as operator
...perators, and with the same precedences. It allows for constructs such as $foo and bar(), which are nice shortcuts for if statements. If unexpected behaviour (from bad documentation, or not reading it) were a reason not to use something we wouldn't be talking about using PHP at all.
...
Why can't Python's raw string literals end with a single backslash?
... Note: Workaround is to use adjacent literal concatentation. r"foo\bar\baz" "\\" (wrap in parens if ambiguous) will create a single literal at compile time, the first part of which is raw, and only the last tiny bit is non-raw, to allow the trailing backslash.
– Sha...
In Node.js, how do I “include” functions from my other files?
...are what you want to expose.
// tools.js
// ========
module.exports = {
foo: function () {
// whatever
},
bar: function () {
// whatever
}
};
var zemba = function () {
}
And in your app file:
// app.js
// ======
var tools = require('./tools');
console.log(typeof tools.foo); // =...
Is passing 'this' in a method call accepted practice in java
...le. In the specific example above it would be more sensible to Move Method foo to the Baz class to avoid having a bi-directional reference between the two classes and to bring the behaviour and the data together.
– JW.
Jul 3 '13 at 16:38
...
Uncaught SyntaxError: Unexpected token :
... use JSONP (as I needed to go cross-domain), and returning the JSON code {"foo":"bar"} and getting the error.
This is because I should have included the callback data, something like jQuery17209314005577471107_1335958194322({"foo":"bar"})
Here is the PHP code I used to achieve this, which degrades...
What is the 'pythonic' equivalent to the 'fold' function from functional programming?
...swered Apr 28 '12 at 18:35
Fred FooFred Foo
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...
Show current key setting?
...
or better yet: :nmap foo :echo('your leader is "<Leader>"')<Esc>| exec 'norm foo'| nun foo
– qeatzy
Oct 27 '19 at 13:57
...