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Create directory if it does not exist
I am writing a PowerShell script to create several directories if they do not exist.
11 Answers
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Ruby on Rails: Where to define global constants?
I'm just getting started with my first Ruby on Rails webapp. I've got a bunch of different models, views, controllers, and so on.
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Do the parentheses after the type name make a difference with new?
...ing" article.
Sometimes the memory returned by the new operator will be initialized, and sometimes it won't depending on whether the type you're newing up is a POD (plain old data), or if it's a class that contains POD members and is using a compiler-generated default constructor.
In C++1998 ther...
Pretty print in MongoDB shell as default
... pretty print output? Currently, everything is output to a single line and it's difficult to read, especially with nested arrays and documents.
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Can you remove elements from a std::list while iterating through it?
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You have to increment the iterator first (with i++) and then remove the previous element (e.g., by using the returned value from i++). You can change the code to a while loop like so:
std::list<item*>::iterator i = items.begin();
while (i != i...
Errors: “INSERT EXEC statement cannot be nested.” and “Cannot use the ROLLBACK statement within an I
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broken link OR unresponsive site.
– SouravA
Mar 8 '18 at 15:13
6
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Use basic authentication with jQuery and Ajax
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Use jQuery's beforeSend callback to add an HTTP header with the authentication information:
beforeSend: function (xhr) {
xhr.setRequestHeader ("Authorization", "Basic " + btoa(username + ":" + password));
},
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How to parse/format dates with LocalDateTime? (Java 8)
Java 8 added a new java.time API for working with dates and times ( JSR 310 ).
7 Answers
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iOS Detection of Screenshot?
... app Snapchat , on the App Store, is an app that lets you share pictures with a self-destruct on them. You can only view the pics for X seconds. If you attempt to take a screenshot while the picture is showing using the home-power key combo, it will tell the sender you tried to take a screenshot.
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Returning value from called function in a shell script
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A Bash function can't return a string directly like you want it to. You can do three things:
Echo a string
Return an exit status, which is a number, not a string
Share a variable
This is also true for some other shells.
Here's how to do each of those options:
1. Echo strings
loc...