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JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
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Well, javascript has try-catch. Depending on what you actually need to do (i.e. what your else statement would look like if it's undefined), that may be what you want.
example:
try {
user.loc.lat.doSomething();
} catch(error) {
//report
}
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How do I get a plist as a Dictionary in Swift?
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This is what I do if I want to convert a .plist to a Swift dictionary:
if let path = NSBundle.mainBundle().pathForResource("Config", ofType: "plist") {
if let dict = NSDictionary(contentsOfFile: path) as? Dictionary<String, An...
“Debug only” code that should run only when “turned on”
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An instance variable would probably be the way to do what you want. You could make it static to persist the same value for the life of the program (or thread depending on your static memory model), or make it an ordinary instance var to control it over the life of an object ins...
How do you create an asynchronous method in C#?
...ephen: "If your async method is dependanton other async methods" - ok, but what if that is not the case. What if were trying to wrap some code that calls BeginInvoke with some callback code?
– Ricibob
Aug 27 '13 at 10:46
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Entity Framework DateTime and UTC
...e is automatically converted to the local timezone of the browser which is what I expect.
And when it is passed back to my server it is converted to UTC again automatically, also as expected.
share
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How to call a SOAP web service on Android [closed]
...es with an Android App. Once people find this question and read it, that's what most of them will be looking for.
– MGOwen
Dec 22 '09 at 3:55
4
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Difference between this and self in JavaScript
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this is always defined in its context. What is undefined is this.foo. That's a huge difference and to achieve the behavior you mentioned existed before ECMA 5, arrow functions can be used or as you specified assigning self to be this outside of the inner function ...
Convert int to ASCII and back in Python
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What about BASE58 encoding the URL? Like for example flickr does.
# note the missing lowercase L and the zero etc.
BASE58 = '123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ'
url = ''
while node_id >= 58:
d...
Difference between int[] array and int array[]
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int array[] makes more sense to me. What do you think about this declaration? int[] x, y? Is y an array or not? Maybe it is, maybe it isn't. Only Java's gurus can answer with confidence....
– user1508893
Feb 18 '13 at 4:12...
How to Remove ReadOnly Attribute on File Using PowerShell?
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@yzorg: So what exactly are you telling me here? As for Keith's answer, he's using PSCX. Not everyone has those installed and that's not really a case of PowerShell v1 vs. v2.
– Joey
Apr 22 '11 at ...