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Remove not alphanumeric characters from string
...e them.
A backslash in the string needs escaping if it's to be taken literally:
"\\test\\red\\bob\\fred\\new".replace(/\W/g, '')
"testredbobfrednew" // output
Handling malformed strings
If you're not able to escape the input string correctly (why not?), or it's coming from some kind of untruste...
How to access the correct `this` inside a callback?
...d inside each function and its value only depends on how the function was called, not how/when/where it was defined. It is not affected by lexical scopes like other variables (except for arrow functions, see below). Here are some examples:
function foo() {
console.log(this);
}
// normal functio...
Check if a table exists in Rails
...? 'kittens'
In Rails 2, 3 & 4 the API is about tables.
# Listing of all tables and views
ActiveRecord::Base.connection.tables
# Checks for existence of kittens table/view (Kitten model)
ActiveRecord::Base.connection.table_exists? 'kittens'
Getting the status of migrations:
# Tells you all...
Parser Error Message: Could not load type 'TestMvcApplication.MvcApplication'
... +1 This was my problem too. The error message and help on this is basically non-existent. Thanks.
– Noldorin
Jan 6 '12 at 11:50
4
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What's the fuss about Haskell? [closed]
...eems to love that language. Being good at Haskell seems somewhat like the hallmark of a genius programmer.
17 Answers
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How to deploy correctly when using Composer's develop / production switch?
...dependencies only while being in development, so the tools will not be installed in production (on the live server). This is (in theory) very handy for scripts that only make sense in development, like tests, fake-data-tools, debugger, etc.
...
Use dynamic variable names in JavaScript
...
Since ECMA-/Javascript is all about Objects and Contexts (which, are also somekind of Object), every variable is stored in a such called Variable- (or in case of a Function, Activation Object).
So if you create variables like this:
var a = 1,
b ...
How can I define an interface for an array of objects with Typescript?
...
Not really an "interface for an array of objects with Typescript"
– basarat
Aug 24 '14 at 10:35
...
How SID is different from Service name in Oracle tnsnames.ora
... So, in your example, there might be SIDs Sales1, Sales2, and Sales3, all of which are available via service name Sales?
– user565869
Sep 4 '14 at 16:51
1
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How can I check for NaN values?
...did not work reliably. Used numpy instead." Having said that, I've not actually ever seen it fail.
– mavnn
Jan 26 '10 at 13:18
24
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