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What is a elegant way in Ruby to tell if a variable is a Hash or an Array?
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@Brandon second example should convert the class to string.<br/>["Hash", "Array"].include?(@some_var.class.to_s) #=> check both through instance class
– OBCENEIKON
Jun 5 '15 at 16:27
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Resource interpreted as stylesheet but transferred with MIME type text/html (seems not related with
...se, I was using an .htaccess rewrite rule to change a directory to a query string variable, like such: RewriteRule ^my_dir/(.+)$ /new_dir/?my_var=$1 [L,QSA]
– lincolnberryiii
Nov 25 '18 at 1:54
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How to avoid 'cannot read property of undefined' errors?
...ains a property.
The easiest way is to use the in operator.
window.a = "aString";
//window should have 'a' property
//lets test if it exists
if ("a" in window){
//true
}
if ("b" in window){
//false
}
Of course you can nest this as deep as you want
if ("a" in window.b.c) { }
Not su...
How to add an empty column to a dataframe?
...at is that datatype for C? I am trying to add by looping through a list of strings. But it does not use it.
– eleijonmarck
Oct 24 '17 at 11:04
add a comment
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Calculate date/time difference in java [duplicate]
...this for a friendly representation of time differences (in milliseconds):
String friendlyTimeDiff(long timeDifferenceMilliseconds) {
long diffSeconds = timeDifferenceMilliseconds / 1000;
long diffMinutes = timeDifferenceMilliseconds / (60 * 1000);
long diffHours = timeDifferenceMillisec...
Is there a way to check if WPF is currently executing in design mode or not?
...e)
{
//Add fake data for design-time only here:
//SomeStringItems = new List<string>
//{
// "Item 1",
// "Item 2",
// "Item 3"
//};
}
}
share
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Delete keychain items when an app is uninstalled
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C# Xamarin version
const string FIRST_RUN = "hasRunBefore";
var userDefaults = NSUserDefaults.StandardUserDefaults;
if (!userDefaults.BoolForKey(FIRST_RUN))
{
//TODO: remove keychain items
userDefaults.SetBool(true, FIRST_...
Differences between socket.io and websockets
...of WebSockets as you described in #2, and probably more importantly it provides fail-overs to other protocols in the event that WebSockets are not supported on the browser or server. I would avoid using WebSockets directly unless you are very familiar with what environments they don't work and you a...
What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA
...laborate querying capability" [Evans, Domain Driven Design] and may be considered as an "objects in memory facade" (Repository discussion)
A DataMapper "moves data between objects and a database while keeping them independent of each other and the mapper itself" (Fowler, PoEAA, Mapper)
A TableData...
How can I search for a multiline pattern in a file?
I needed to find all the files that contained a specific string pattern. The first solution that comes to mind is using find piped with xargs grep :
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