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What is the difference between null and undefined in JavaScript?
...alert() this value, you won't see anything. However, if you append a blank string to it then suddenly it'll appear:
var s;
WScript.Echo(s);
WScript.Echo("" + s);
You can declare a variable, set it to null, and the behavior is identical except that you'll see "null" printed out versus "undefined"....
How to read file contents into a variable in a batch file?
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I know, I struggled for hours to replace a string in a file :|
– Iulian Onofrei
Jul 18 '14 at 14:04
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How do I call setattr() on the current module?
...iginal question is asking how to set an attribute whose name is given by a string (the same thing I was presently searching for), so this would not help.
– Curt
Feb 10 '16 at 5:22
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What is the difference between const and readonly in C#?
...nforce this. The runtime also happens not to enforce that you don't change string.Empty to "Hello, world!", but I still wouldn't claim that this makes string.Empty modifiable, or that code shouldn't assume that string.Empty will always be a zero-length string.
– user743382
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How big is too big for a PostgreSQL table?
... common to completely remove the ORM from the equation and write a raw sql string to query for performance reasons. Don't let your ORM make data decisions for you! It's an accessory not an essential.
– Stefan Theard
May 24 '17 at 15:03
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Cannot create an array of LinkedLists in Java…?
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List<String>[] lst = new List[2];
lst[0] = new LinkedList<String>();
lst[1] = new LinkedList<String>();
No any warnings. NetBeans 6.9.1, jdk1.6.0_24
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How do you get the current time of day?
...w.TimeOfDay gives it to you as a TimeSpan (from midnight).
DateTime.Now.ToString("h:mm:ss tt") gives it to you as a string.
DateTime reference: https://msdn.microsoft.com/en-us/library/system.datetime
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How can I find my Apple Developer Team id and Team Agent Apple ID?
...g to transfer an app. I am having troubles finding my team agent apple id and my team id. I have found it before and I have searched for 30 min without any luck now that i need it.
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How to implement Android Pull-to-Refresh
In Android applications such as Twitter (official app), when you encounter a ListView, you can pull it down (and it will bounce back when released) to refresh the content.
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How do I migrate an SVN repository with history to a new Git repository?
...sitory, something like http://svn.mycompany.com/myrepo/repository. The URL string must not include /trunk, /tag or /branches.
Note that after executing this command it very often looks like the operation is "hanging/freezed", and it's quite normal that it can be stuck for a long time after initiali...