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E11000 duplicate key error index in mongodb mongoose
... the sparse index to filter these null values from the unique index and avoid the error.
unique indexes
Sparse indexes only contain entries for documents that have the indexed field, even if the index field contains a null value.
In other words, a sparse index is ok with multiple documents all ha...
Using .text() to retrieve only text not nested in child tags
...lementation based on the clone() method found here to get only the text inside the parent element.
Code provided for easy reference:
$("#foo")
.clone() //clone the element
.children() //select all the children
.remove() //remove all the children
.end() //again go back to sel...
Load and execution sequence of a web page?
...kkk.png");
});
</script>
</head>
<body>
<img id="img" src="abc.jpg" style="width:400px;height:300px;"/>
<script src="kkk.js" type="text/javascript"></script>
</body>
</html>
roughly the execution flow is about as follows:
The HTML docum...
Using an HTML button to call a JavaScript function
...in different situations.
1: There's defining it in the HTML:
<input id="clickMe" type="button" value="clickme" onclick="doFunction();" />
2: There's adding it to the DOM property for the event in Javascript:
//- Using a function pointer:
document.getElementById("clickMe").onclick = doFu...
How do you receive a url parameter with a spring controller mapping
...ing @RequestParam instead of @ModelAttribute, e.g.
@RequestMapping("/{someID}")
public @ResponseBody int getAttr(@PathVariable(value="someID") String id,
@RequestParam String someAttr) {
}
You can even omit @RequestParam altogether if you choose, and Spring will ...
How to add icon inside EditText view in Android ?
I want to add a "search" icon to appear inside an EditText in the left edge? such as search box in Facebook Android app?
...
Basic example of using .ajax() with JSONP?
... because we have to fetch this array from script tag. So JSONP creators decided that this will work better (and it is):
script = document.createElement("script");
script.type = "text/javascript";
script.src = "http://www.someWebApiServer.com/some-data?callback=my_callback";
Notice my_callback fun...
Configuring Vim for C++
...
NERDTree http://www.vim.org/scripts/script.php?script_id=1658
Exuberant ctags (vim already supports the hotkeys natively) http://ctags.sourceforge.net/
taglist: http://vim-taglist.sourceforge.net/
snipmate: http://www.vim.org/scripts/script.php?script_id=2540
I don't do omni...
Adding elements to object
... many element objects. Code example:
var element = {}, cart = [];
element.id = id;
element.quantity = quantity;
cart.push(element);
If you want cart to be an array of objects in the form { element: { id: 10, quantity: 1} } then perform:
var element = {}, cart = [];
element.id = id;
element.quant...
IIS AppPoolIdentity and file system write access permissions
...
The ApplicationPoolIdentity is assigned membership of the Users group as well as the IIS_IUSRS group. On first glance this may look somewhat worrying, however the Users group has somewhat limited NTFS rights.
For example, if you try and create...