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How to move a file?
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Note that you must include the file name (file.foo) in both the source and destination arguments. If it is changed, the file will be renamed as well as moved.
Note also that in the first two cases the directory in which the new file is being created must already exist. On Windows, a file with t...
What are Makefile.am and Makefile.in?
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Makefile.am is a programmer-defined file and is used by automake to generate the Makefile.in file (the .am stands for automake).
The configure script typically seen in source tarballs will use the Makefile.in to generate a Makefile.
The configure script itself is g...
JQuery - $ is not defined
...e $ variable.
You have JavaScript running before the page is fully loaded, and as such, before jQuery is fully loaded.
First of all, ensure, what script is call properly, it should looks like
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"&g...
Method has the same erasure as another method in type
...o my superclass' signature, your method still overrides.
Now, time passes and you decide you are ready to update your class. But you screw up a little, and instead of editing the existing, raw toList() method, you add a new method like this:
class Overrider extends CollectionConverter {
@Overrid...
How to check if click event is already bound - JQuery
...y._data(elem, 'events'), an internal data structure, which is undocumented and therefore not 100% guaranteed to remain stable. This shouldn't, however, be a problem, and the relevant line of the plugin code above can be changed to the following:
var data = jQuery._data(this[0], 'events')[type];
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When creating a service with sc.exe how to pass in context parameters?
...onN]
The trick is to leave a space after the = in your create statement, and also to use " " for anything containing special characters or spaces.
It is advisable to specify a Display Name for the service as well as setting the start setting to auto so that it starts automatically. You can do thi...
Rails respond_with: how does it work?
I've been reading here and there about how cool the respond_with method is in Rails 3. But I can't even find a reference to it in either the Rails APIs or by searching the source. Can anyone either explain to me how it works (what options you can use, etc) or point me to the place it's actually im...
Meaning of Choreographer messages in Logcat [duplicate]
I installed the latest versions of SDK (API 16) and got the latest ADT. I'm now seeing these messages in the logcat, that I'm quite sure, I haven't seen before. Does anyone have an idea about this?
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How to make ReSharper re-evaluate its assembly reference highlighting
I am creating a Prism Project Template, and the template works great. But after I create a project with the template some of the files look like this:
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Postgres: INSERT if does not exist already
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Postgres 9.5 (released since 2016-01-07) offers an "upsert" command, also known as an ON CONFLICT clause to INSERT:
INSERT ... ON CONFLICT DO NOTHING/UPDATE
It solves many of the subtle problems you can run into when using concurrent operation, which some other answers propose.
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