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How do I list the functions defined in my shell?
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grep is not a good solution for this, strings that match function definitions will cause false positives. @wjandrea can still be caught by multi line strings, as will any regex.
– Matt
Apr 7 '18 at 21:56
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How can I confirm a database is Oracle & what version it is using SQL?
...her crude way is to look into Oracle binary, If DB in hosted on Linux, try strings on Oracle binary.
strings -a $ORACLE_HOME/bin/oracle |grep RDBMS | grep RELEASE
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How to get the file extension in PHP? [duplicate]
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No need to use string functions. You can use something that's actually designed for what you want: pathinfo():
$path = $_FILES['image']['name'];
$ext = pathinfo($path, PATHINFO_EXTENSION);
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How to check what version of jQuery is loaded?
...ote a third simple command to pull the jQuery version. $_ should return a string containing the version number.
If you get back a version number -- usually as a string -- then jQuery is loaded and that is what version you're working with. If not loaded then you should get back undefined or mayb...
Remove all the children DOM elements in div
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In Dojo 1.7 or newer, use domConstruct.empty(String|DomNode):
require(["dojo/dom-construct"], function(domConstruct){
// Empty node's children byId:
domConstruct.empty("someId");
});
In older Dojo, use dojo.empty(String|DomNode) (deprecated at Dojo 1.8):
dojo.em...
How to trigger event when a variable's value is changed?
... }
}
}
}
private NotifyPropertyChanged(string propertyName)
{
//Raise PropertyChanged event
}
public event PropertyChangedEventHandler PropertyChanged;
}
public class MySubscriber
{
private MyClass _myClass;
void PropertyChan...
How do you clear a slice in Go?
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See playground
package main
import (
"fmt"
)
func dump(letters []string) {
fmt.Println("letters = ", letters)
fmt.Println(cap(letters))
fmt.Println(len(letters))
for i := range letters {
fmt.Println(i, letters[i])
}
}
func main() {
letters := []string{"a", ...
Change Placeholder Text using jQuery
..."#yourtextboxid").attr("placeholder", "variable");
where, if variable is string then you can use like above, if it is variable replace it with the name like "variable" with out double quotes.
eg: $("#youtextboxid").attr("placeholder", variable);
it will work.
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Add a CSS class to
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Note that you need to explicitly pass a string ('name of button here') as the first argument to submit in order to use the :class hash as in the answer above. If you don't have that string, you'll get an error message.
– thewillcole
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In C#, how do I calculate someone's age based on a DateTime type birthday?
...Drop the last 4 digits = 28.
C# Code:
int now = int.Parse(DateTime.Now.ToString("yyyyMMdd"));
int dob = int.Parse(dateOfBirth.ToString("yyyyMMdd"));
int age = (now - dob) / 10000;
Or alternatively without all the type conversion in the form of an extension method. Error checking omitted:
public...