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How to allow only one radio button to be checked?
... for all the radio buttons in a form.
i.e.,
<input type="radio" name="test" value="value1"> Value 1
<input type="radio" name="test" value="value2"> Value 2
<input type="radio" name="test" value="value3"> Value 3
Hope that would help.
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Convert string in base64 to image and save on filesystem in Python
... @Oleg Tarasenko, I had a typo in the second method. I fiexed it and tested it on your string and it works.
– John La Rooy
Feb 25 '10 at 21:13
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How to create module-wide variables in Python? [duplicate]
..._ # add this line!
if __DBNAME__ is None: # see notes below; explicit test for None
__DBNAME__ = name
else:
raise RuntimeError("Database name has already been set.")
By the way, for this example, the simple if not __DBNAME__ test is adequate, because any string value other...
Generate an integer that is not among four billion given ones
...I used it in my own answer) but it's not obvious to everybody. It's a good test to see if you can spot obvious solutions or if you're going to over-complicate everything you touch.
– Mark Ransom
Aug 23 '11 at 17:00
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What is the opposite of evt.preventDefault();
...ementById("foo").onsubmit = function(e) {
if (document.getElementById("test").value == "test") {
return true;
} else {
e.preventDefault();
}
}
<form id="foo">
<input id="test"/>
<input type="submit"/>
</form>
...unless I'm missing someth...
How to detect if a function is called as constructor?
...s made available to the executing code, so the only thing it's possible to test inside x is the this value, which is what all the answers here are doing. As you've observed, a new instance of* x when calling x as a constructor is indistinguishable from a pre-existing instance of x passed as this whe...
Undefined reference to pthread_create in Linux
...sing the following command (suppose the c file I want to compile is called test.c):
gcc -o test test.c -pthread
Hope it helps somebody!
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follo...
Does a method's signature in Java include its return type?
...el, "return type" is part of method signature. Consider this
public class Test1 {
public Test1 clone() throws CloneNotSupportedException {
return (Test1) super.clone();
}
}
in bytecode there are 2 clone() methods
public clone()LTest1; throws java/lang/CloneNotSupportedException...
Avoiding if statement inside a for loop?
...rry about in terms of performance
In this case I advocate for keeping the test inside the loop for clarity.
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Firefox session cookies
...ies from months ago that were set by sites I always have open in tabs.
To test this out, close all the tabs in your browser, then close the browser and restart it. I think the session cookies for your site should clear in that case. Otherwise you'd have to turn off session restore.
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