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javascript check for not null
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It's because val is not null, but contains 'null' as a string.
Try to check with 'null'
if ('null' != val)
For an explanation of when and why this works, see the details below.
share
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Store images in a MongoDB database
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You can try this one:
String newFileName = "my-image";
File imageFile = new File("/users/victor/images/image.png");
GridFS gfsPhoto = new GridFS(db, "photo");
GridFSInputFile gfsFile = gfsPhoto.createFile(imageFile);
gfsFile.setFilename(newFileNam...
reading from app.config file
...rationSettings.AppSettings["StartingMonthColumn"] returns null or an empty string I would suspect that Int32.Parse will throw an exception on attempting to parse that values.
– Bittercoder
Mar 8 '10 at 10:10
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How to run Selenium WebDriver test cases in Chrome?
...ew browser version.
public class chrome
{
public static void main(String[] args) {
System.setProperty("webdriver.chrome.driver", "/path/to/chromedriver");
WebDriver driver = new ChromeDriver();
driver.get("http://www.google.com");
}
}
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An efficient way to transpose a file in Bash
... ")|transpose|map(join(" "))[]'
jq -R . prints each input line as a JSON string literal, -s (--slurp) creates an array for the input lines after parsing each line as JSON, and -r (--raw-output) outputs the contents of strings instead of JSON string literals. The / operator is overloaded to split s...
How do I get a file name from a full path with PHP?
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The basename function should give you what you want:
Given a string containing a path to a
file, this function will return the
base name of the file.
For instance, quoting the manual's page:
<?php
$path = "/home/httpd/html/index.php";
$file = basename($path); ...
Alternate FizzBuzz Questions [closed]
... of the problems I've seen, in order of increasing difficulty:
Reverse a string
Reverse a sentence ("bob likes dogs" -> "dogs likes bob")
Find the minimum value in a list
Find the maximum value in a list
Calculate a remainder (given a numerator and denominator)
Return distinct values from a lis...
How to pretty print nested dictionaries?
...he only thing I can say against it is that it don't produce a valid python string, but can almost be converted back in python.
– y.petremann
Oct 6 '14 at 4:49
1
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Entity Framework code first unique column
...g System.ComponentModel.DataAnnotations.Schema;
If your model field is a string, make sure it is not set to nvarchar(MAX) in SQL Server or you will see this error with Entity Framework Code First:
Column 'x' in table 'dbo.y' is of a type that is invalid for use as a key column in an index.
T...
How to query SOLR for empty fields?
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Would this only work for fields of type String? How would you do it for for boolean?
– jared
Oct 4 '16 at 11:16
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