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How To Check If A Key in **kwargs Exists?
... can see, if prefix is not contained in kwargs, then the default '' (empty string) is being stored in the local prefix variable. If it is given, then its value is being used.
This is generally a compact and readable recipe for writing wrappers for any kind of function: Always just pass-through argu...
What to do on TransactionTooLargeException
...== null) {
state = new Bundle();
}
String key = "f" + i;
mFragmentManager.putFragment(state, key, f);
}
}
return state;
}
As you can see, even if you properly manage the fragments in the FragmentStatePagerAdapter subclass, the bas...
What's the difference between IEquatable and just overriding Object.Equals()?
...ng. The compiler can optimize away upcasts For example object o = (object)"string"; But downcasting - string s = (string)o; - must happen at runtime.
– Josh
Apr 29 '10 at 5:58
...
try/catch versus throws Exception
...t to use try-catch.
There is a rule "An overridden method cannot throw any extra exception other than what its parent class is throwing". If there is any extra exception that should be handled using try-catch.
Consider this code snippet.
There is a simple base class
package trycatchvsthrows;
publi...
Testing if a checkbox is checked with jQuery
...long story you have gone to far JQUERY want developer to write less and do extra more. simple problem deserve simple solution
– ShapCyber
Jul 1 '15 at 21:07
...
Reduce, fold or scan (Left/Right)?
...the collection (from A to C):
val abc = List("A", "B", "C")
def add(res: String, x: String) = {
println(s"op: $res + $x = ${res + x}")
res + x
}
abc.reduceLeft(add)
// op: A + B = AB
// op: AB + C = ABC // accumulates value AB in *first* operator arg `res`
// res: String = ABC
abc.foldLe...
Standard alternative to GCC's ##__VA_ARGS__ trick?
...argc, char *argv[])
{
BAR("first test");
BAR("second test: %s", "a string");
return 0;
}
This same trick is used to:
count the number of arguments
expand differently depending on the number of arguments
append to __VA_ARGS__
Explanation
The strategy is to separate __VA_ARGS__ into...
Refreshing web page by WebDriver when waiting for specific condition
...nt ways to refresh a webpage using Selenium Webdriver
There is no special extra coding. I have just used the existing functions in different ways to get it work. Here they are :
Using sendKeys.Keys method
driver.get("https://accounts.google.com/SignUp");
driver.findElement(By.id("firstname-place...
Why does the month argument range from 0 to 11 in JavaScript's Date constructor?
... probably because no one in their right mind would ever create an array of string names for days (e.g., { "first", "second", "third", ..., "twenty-seventh", ... }) and try to index it by tm_mday. Then again, maybe they just saw the absolute utility in making off by one errors a regular occurrence.
...
URL to load resources from the classpath in Java
...ndlerFactory implements URLStreamHandlerFactory {
private final Map<String, URLStreamHandler> protocolHandlers;
public ConfigurableStreamHandlerFactory(String protocol, URLStreamHandler urlHandler) {
protocolHandlers = new HashMap<String, URLStreamHandler>();
add...