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How to detect if a variable is an array
...efore, it might be a good idea to check if the object has a property named 0 instead, which can be done via one of these checks:
typeof obj[0] !== 'undefined' // false negative for `obj[0] = undefined`
obj.hasOwnProperty('0') // exclude array-likes with inherited entries
'0' in Object(obj) // inclu...
Using LINQ to remove elements from a List
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answered May 12 '09 at 16:01
Jon SkeetJon Skeet
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Validation failed for one or more entities while saving changes to SQL Server Database using Entity
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840
You can extract all the information from the DbEntityValidationException with the following code...
How do you get a timestamp in JavaScript?
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5025
Short & Snazzy:
+ new Date()
A unary operator like plus triggers the valueOf method in ...
Which maven dependencies to include for spring 3.0?
I am trying to do my first project with Spring 3.0 (and maven). I have been using Spring 2.5 (and primer versions) in quite some projects. Nevertheless I am kinda confused, what modules I have to define as dependencies in my pom.xml. I just want to use the core container functions (beans, core, cont...
Video auto play is not working in Safari and Chrome desktop browser
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edited Sep 20 '18 at 9:10
answered Aug 1 '13 at 12:53
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How do I check if an element is really visible with JavaScript? [duplicate]
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+100
For the point 2.
I see that no one has suggested to use document.elementFromPoint(x,y), to me it is the fastest way to test if an el...
How to use random in BATCH script?
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120
%RANDOM% gives you a random number between 0 and 32767.
Using an expression like SET /A test=%R...
(Built-in) way in JavaScript to check if a string is a valid number
...xamples
isNaN(123) // false
isNaN('123') // false
isNaN('1e10000') // false (This translates to Infinity, which is a number)
isNaN('foo') // true
isNaN('10px') // true
Of course, you can negate this if you need to. For example, to implement the IsNumeric example you gav...
Cleanest way to write retry logic?
...ar exceptions = new List<Exception>();
for (int attempted = 0; attempted < maxAttemptCount; attempted++)
{
try
{
if (attempted > 0)
{
Thread.Sleep(retryInterval);
}
...