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How to do a safe join pathname in ruby?
...rator on all platforms, including Windows, so you don't actually need use different code for joining things together on different platforms. "C:/tmp/1.text" should work fine.
File.join() is your friend for joining paths together.
prefix_tmp_path = 'C:/tmp'
filename = "#{rand(10)}.txt"
fullname = ...
What is the difference between Θ(n) and O(n)?
...g because nobody knows how to type this symbol, or does it mean something different?
9 Answers
...
How do I get a PHP class constructor to call its parent's parent's constructor?
... __construct($bypass = false)
{
// only perform actions inside if not bypassing
if (!$bypass) {
}
// call Grandpa's constructor
parent::__construct();
}
}
class Kiddo extends Papa
{
public function __construct()
{
$bypassPapa = true;
...
How do I use a custom Serializer with Jackson?
...
As mentioned, @JsonValue is a good way. But if you don't mind a custom serializer, there's no need to write one for Item but rather one for User -- if so, it'd be as simple as:
public void serialize(Item value, JsonGenerator jgen,
SerializerProvider provider) thro...
How to turn on/off ReactJS 'development mode'?
...ention to toggle dev time helpers off during production. Just using the minified react will leave all those potential optimizations on the table as well.
Ultimately the magic comes down to React embedding references to process.env.NODE_ENV throughout the codebase; these act like a feature toggle.
if...
adding and removing classes in angularJs using ng-click
...$scope){
$scope.class = "red";
$scope.changeClass = function(){
if ($scope.class === "red")
$scope.class = "blue";
else
$scope.class = "red";
};
});
.red{
color:red;
}
.blue{
color:blue;
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/...
Media Queries: How to target desktop, tablet, and mobile?
...ons thereof, be cognizant of the order of your rules, keeping in mind that if multiple rules match the same element, the later rules will override the earlier rules.
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Can I add comments to a pip requirements file?
...
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
...
Gson ignoring map entries with value=null
...
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
...
What's an easy way to read random line from a file in Unix command line?
... Andalso, sort -R is definitely going to make one wait a lot if dealing with considerably huge files -- 80kk lines --, whereas, shuf -n acts quite instantaneously.
– Rubens
Jun 18 '13 at 6:56
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