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How can I check for NaN values?
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The usual way to test for a NaN is to see if it's equal to itself:
def isNaN(num):
return num != num
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Why does the jquery change event not trigger when I set the value of a select using val()?
...x up with default change event you can provide your custom event
$('input.test').on('value_changed', function(e){
console.log('value changed to '+$(this).val());
});
to trigger the event on value set, you can do
$('input.test').val('I am a new value').trigger('value_changed');
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How can a string be initialized using “ ”?
...eral.
But you should keep in mind the string equality.
Here a short JUnit test to demonstrate what I mean.
@Test
public void stringTest() {
// a string literal and a string object created
// with the same literal are equal
assertEquals("string", new String("string"));...
How to turn off INFO logging in Spark?
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Inspired by the pyspark/tests.py I did
def quiet_logs(sc):
logger = sc._jvm.org.apache.log4j
logger.LogManager.getLogger("org"). setLevel( logger.Level.ERROR )
logger.LogManager.getLogger("akka").setLevel( logger.Level.ERROR )
Calling...
Are HTTP headers case-sensitive?
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I meant a concrete test case; I do have an IE to test with.
– Julian Reschke
May 6 '16 at 21:28
11
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How to access the request body when POSTing using Node.js and Express?
...app.post('/', function(req, res){
console.dir(req.body);
res.send("test");
});
app.listen(3000);
This other question might also help: How to receive JSON in express node.js POST request?
If you don't want to use the bodyParser check out this other question: https://stackoverflow.com/a/9...
What is “missing” in the Visual Studio 2008 Express Editions?
...imited set of designers
Limited set of database tools
No code profiling or test framework support
No MFC/ATL support
No support for compiling C++ to 64-bit images (workaround is to install Windows SDK which is free)
NOTE: it is often said that the Express EULA does not permit commercial developmen...
Is there any sed like utility for cmd.exe? [closed]
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@and-bri (Get-Content c:\temp\test.txt).replace('[MYID]', 'MyValue') | Set-Content c:\temp\test.txt
– AFP_555
May 3 '19 at 15:44
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Can I convert long to int?
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Test if myValue > Integer.Max before running the convert, if you need to do other processing when myValue > Integer.Max. Convert.ToInt32(myValue) will overflow (no exception, I believe) otherwise. This method works in...
Regular expression for floating point numbers
...r certainly takes care of 0.24 and 2.2 and correctly disallows 4.2.44 All tested with regex101.com However, it disallows 123. which as you say may be acceptable (and I think it is!). I can fix this by changing your expression to [-+]?(\d*[.])?\d* (notice * at end instead of +) but then crazy thing...