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Using try vs if in python
...bility.
In your example (say that instead of returning a list or an empty string, the function were to return a list or None), if you expect that 99 % of the time result will actually contain something iterable, I'd use the try/except approach. It will be faster if exceptions really are exceptional...
Python: print a generator expression?
... [] brackets around it. So yeah, you can do
>>> list((x for x in string.letters if x in (y for y in "BigMan on campus")))
But you can just as well do
>>> [x for x in string.letters if x in (y for y in "BigMan on campus")]
Yes, that will turn the generator expression into a li...
What is the list of possible values for navigator.platform as of today? [closed]
...roperty is sent by the browser and can thus be faked, just like user agent strings. Never rely on the navigator object to be completely accurate.
The definition
As far as I know there isn't a single public list of all possible `navigator.platform` values, even though the property has been around for...
How to show the “Are you sure you want to navigate away from this page?” when changes committed?
... consistently by all browsers. It should be a function reference and not a string (as the original answer stated) but that will work in older browsers because the check for most of them appears to be whether anything is assigned to onbeforeunload (including a function that returns null).
You set wi...
How do I create a message box with “Yes”, “No” choices and a DialogResult?
...
You can also use this variant with text strings, here's the complete changed code (Code from Mikael), tested in C# 2012:
// Variable
string MessageBoxTitle = "Some Title";
string MessageBoxContent = "Sure";
DialogResult dialogResult = MessageBox.Show(MessageBoxCo...
Converting from IEnumerable to List [duplicate]
...rrayList();
_provinces.Add("Western");
_provinces.Add("Eastern");
List<string> provinces = _provinces.Cast<string>().ToList();
If you're using Generic version IEnumerable<T>, The conversion is straight forward. Since both are generics, you can do like below,
IEnumerable<in...
Determine if code is running as part of a unit test
...tatic class UnitTestDetector
{
static UnitTestDetector()
{
string testAssemblyName = "Microsoft.VisualStudio.QualityTools.UnitTestFramework";
UnitTestDetector.IsInUnitTest = AppDomain.CurrentDomain.GetAssemblies()
.Any(a => a.FullName.StartsWith(testAssemblyNam...
jQuery UI datepicker change event not caught by KnockoutJS
...t);
//handle date data coming via json from Microsoft
if (String(value).indexOf('/Date(') == 0) {
value = new Date(parseInt(value.replace(/\/Date\((.*?)\)\//gi, "$1")));
}
var current = $el.datepicker("getDate");
if (value - current !== 0) {
...
How to scale threads according to CPU cores?
...d run() {
// do one task
}
});
or
Future<String> future = pool.submit(new Callable<String>() {
public String call() throws Exception {
return null;
}
});
future.get(); // Will block till result available
This is a lot ...
Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)
...8. Let action be the submitter element's action.
9. If action is the empty string, let action be the document's address.
Note: This step is a willful violation of RFC 3986, which would require base URL processing here. This violation is motivated by a desire for compatibility with legacy content. [R...