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Calling a parent window function from an iframe
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Always take into account that parent document and iframe document must match by protocol and domain name. If it does not happen then you will get a security error as it is not allow to have cross domain scripting.
– a4bike
Sep 2 '15...
How can I save an image to the camera roll?
I am new to Xcode (using 4.3) and am not sure how to save an image to the device's camera roll. All that I have done so far is set up an IBAction for the button to save the image. What library method or function can I use to save an image to the user's camera roll?
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How can I calculate the time between 2 Dates in typescript
...the getTime method to get the time in total milliseconds since 1970-01-01, and subtract those:
var time = new Date().getTime() - new Date("2013-02-20T12:01:04.753Z").getTime();
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Which websocket library to use with Node.js? [closed]
...answer. Feel free to edit me with your improvements.
ws
WebSocket server and client for node.js. One of the fastest libraries if not the fastest one.
websocket-node
WebSocket server and client for node.js
websocket-driver-node WebSocket server and client protocol parser node.js - used in faye-webs...
What is a “batch”, and why is GO used?
I have read and read over MSDN, etc. Ok, so it signals the end of a batch.
6 Answers
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Why would iterating over a List be faster than indexing through it?
...use every time you are indexing it restarts from the beginning of the list and goes through every item. This means that your complexity is effectively O(N^2) just to traverse the list!
If instead I did this:
for(String s: list) {
System.out.println(s);
}
then what happens is this:
head ->...
How can I upload fresh code at github?
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git commit -m "Initial commit"
After this, make a new GitHub repository and follow on-screen instructions.
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How to use MySQL DECIMAL?
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DOUBLE columns are not the same as DECIMAL columns, and you will get in trouble if you use DOUBLE columns for financial data.
DOUBLE is actually just a double precision (64 bit instead of 32 bit) version of FLOAT. Floating point numbers are approximate representations of real...
What's the difference between “bundle display name” and “bundle name” in cocoa application's info pl
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how did a "I have no idea" answer get a checkmark and up votes?
– badweasel
Sep 18 '14 at 6:49
14
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Test whether a list contains a specific value in Clojure
...se for sets (which can be thought of as making no distinction between keys and values), maps (so (contains? {:foo 1} :foo) is true) and vectors (but note that (contains? [:foo :bar] 0) is true, because the keys here are indices and the vector in question does "contain" the index 0!).
To add to the ...