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Check if an array is empty or exists
...ge_array.length). IMHO, while you can safely rely on JS's loose-typing, to convert a 0 integer to false and a non-zero integer to true, I consider it preferable, for readability in the future, to "say what you mean". I would do .. && image_array.length > 0).
– Toolma...
Html.DropdownListFor selected value not being set
...e selected value of a Html.DropDownListFor? I've been having a look online and have seen that it can be achieved by using the fourth parameter so like the below:
...
No submodule mapping found in .gitmodule for a path that's not a submodule
...h actually are gitlinks.
See How to track untracked content? in order to convert such a directory to a real submodule.
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How to paginate with Mongoose in Node.js?
...ocalhost:5000?page=0&limit=25
Since it would be a String we need to convert it to a Number for our calculations. Let's do it using the parseInt method and let's also provide some default values.
const pageOptions = {
page: parseInt(req.query.page, 10) || 0,
limit: parseInt(req.query....
How to create a simple map using JavaScript/JQuery [duplicate]
...the .toString of the key Objects, when storing and retrieving the entries, convert the objects to a string which represents your understanding of uniqueness. E.g. map[toUniqueString(key1)] = 1
Sometimes, though, that is not possible. If you want to map data based on, for example File objects, ther...
Check if one IEnumerable contains all elements of another IEnumerable
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There is no "fast way" to do this unless you track and maintain some state that determines whether all values in one collection are contained in another. If you only have IEnumerable<T> to work against, I would use Intersect.
var allOfList1IsInList2 = list1.Intersect(l...
How to get the first five character of a String
...get the result back in string then you can use:
Using String Constructor and LINQ's Take
string firstFivChar = new string(yourStringVariable.Take(5).ToArray());
The plus with the approach is not checking for length before hand.
The other way is to use String.Substring with error checking
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Exception 'open failed: EACCES (Permission denied)' on Android
...wrong place. This is right:
<manifest>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
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<application>
...
<activity>
...
</activity>
</application>...
How do I change selected value of select2 dropdown with JqGrid?
... @AdamKDean: One can test additionally whether <select> where converted to select2 control by testing existense of the class select2-offscreen on the <select>. All elements of searching toolbar have id which start with gs_ prefix and have the name like in colModel. You can use get...
Tools for JPEG optimization? [closed]
...ize does a lossless optimization of the Huffmann compression. You can also convert the images to progressive mode with -progressive, but that might cause compatibility problems (does anyone know more about that?)
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