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How to import a module given its name as string?
...st']
>>> modules = map(__import__, moduleNames)
Ripped straight from Dive Into Python.
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Any reason not to use '+' to concatenate two strings?
...ome cases, but other implementations can't, so programmers are discouraged from relying on this.) ''.join is the right way to do this.
...
What is the difference between a weak reference and an unowned reference?
...bject (a.k.a. they don't increase the retain count in order to prevent ARC from deallocating the referred object).
But why two keywords? This distinction has to do with the fact that Optional types are built-in the Swift language. Long story short about them: optional types offer memory safety (this...
How to link to apps on the app store
...
Edited on 2016-02-02
Starting from iOS 6 SKStoreProductViewController class was introduced. You can link an app without leaving your app. Code snippet in Swift 3.x/2.x and Objective-C is here.
A SKStoreProductViewController object presents a store tha...
curl : (1) Protocol https not supported or disabled in libcurl
... application/json" --data-binary "{ \"name\":\"Curler\", \"text\": \"Hello from the command line\" }" instead of curl "http://localhost:3030/messages/" -H "Content-Type: application/json" --data-binary '{ "name":"Curler", "text": "Hello from the command line" }'... take note of the single and unesca...
Create a new object from type parameter in generic class
...cs to tighten up the types:
class TestBase {
hi() {
alert('Hi from base');
}
}
class TestSub extends TestBase {
hi() {
alert('Hi from sub');
}
}
class TestTwo<T extends TestBase> {
constructor(private testType: new () => T) {
}
getNew() : T {
...
How to remove an HTML element using Javascript?
...it the form, handle the submit event on the form instead, and return false from your handler:
HTML:
<form onsubmit="return removeDummy(); ">
<input type="submit" value="Remove DUMMY"/>
</form>
JavaScript:
function removeDummy() {
var elem = document.getElementById('du...
How to include a Font Awesome icon in React's render()
...se the react-fontawesome icon library. Here's the link: react-fontawesome
From the NPM page, just install via npm:
npm install --save react-fontawesome
Require the module:
var FontAwesome = require('react-fontawesome');
And finally, use the <FontAwesome /> component and pass in attribut...
Getting the location from an IP address [duplicate]
...ant to retrieve information like the city, state, and country of a visitor from their IP address, so that I can customize my web page according to their location. Is there a good and reliable way to do this in PHP? I am using JavaScript for client-side scripting, PHP for server-side scripting, and M...
Creation timestamp and last update timestamp with Hibernate and MySQL
...
Im my case removing nullable=false from @Column(name = "create_date" , nullable=false) worked
– Shantaram Tupe
Nov 22 '17 at 10:14
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