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Global variables in R
...;<- will search up the chain of enclosures up to the global environment and assign to the first matching variable it finds. Hypothetically, if you have a function f() nested in a closure g() and a exists in g(), then using a <<- in f() will assign to a in g(), not to the global environment....
Printing Python version in output
...Léonard's solution is the best. You might want to examine the full string and see if you need it or portions of it.
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How do I pick 2 random items from a Python set? [duplicate]
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Use the random module: http://docs.python.org/library/random.html
import random
random.sample(set([1, 2, 3, 4, 5, 6]), 2)
This samples the two values without replacement (so the two values are different).
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Converting an array to a function arguments list [duplicate]
... current versions of JS you can use:
app[func]( ...args );
Users of ES5 and older will need to use the .apply() method:
app[func].apply( this, args );
Read up on these methods at MDN:
.apply()
spread "..." operator (not to be confused with the related rest "..." parameters operator: it's go...
LINUX: Link all files from one to another directory [closed]
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This does not include hidden files, and it links whole directories. If either of these is not what you want, see my answer. Otherwise, it's the shortest way.
– Cascabel
Aug 28 '09 at 14:17
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How to remove a lambda event handler [duplicate]
I recently discovered that I can use lambdas to create simple event handlers. I could for example subscribe to a click event like this:
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java.net.MalformedURLException: no protocol
...DocumentBuilder.html
The method DocumentBuilder.parse(String) takes a URI and tries to open it. If you want to directly give the content, you have to give it an InputStream or Reader, for example a StringReader. ... Welcome to the Java standard levels of indirections !
Basically :
DocumentBuilder...
How can I account for period (AM/PM) using strftime?
...your time strings have 0.00pm, (%I starts at 1) !!
– Andy Hayden
Apr 20 '15 at 23:10
2
@AndyHayde...
Undo closed tab in Eclipse?
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Yes it's possible. Close a tab and hit the left yellow arrow in the Eclipse menu bar above.
You can adjust the keyboard shortcut for that in the eclipse preferences under General > Keys.
On Mac it's ⌘ + [
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How do I create JavaScript array (JSON format) dynamically?
...ust a little bit different from @Chase answer:
var employees = {};
// ...and then:
employees.accounting = new Array();
for (var i = 0; i < someArray.length; i++) {
var temp_item = someArray[i];
// Maybe, here make something like:
// temp_item.name = 'some value'
employees.acc...