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ruby system command check exit code
... An error status is available in $?.
system("VBoxManage createvm --invalid-option")
$? #=> #<Process::Status: pid 9926 exit 2>
$?.exitstatus #=> 2
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When should I release objects in -(void)viewDidUnload rather than in -dealloc?
...
[self createManyViewsAndAddThemToSelfDotView];
}
in addition, a nib file may create a button and append it to the view controller's view.
On iPhone OS 2.2, when -didReceiveMemoryWarning was invoked from the system, you had to release something to free up memory. You could release the whole v...
In Python, how do you convert seconds since epoch to a `datetime` object?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
How can I get the intersection, union, and subset of arrays in Ruby?
...s by doing &(intersection), -(difference), and |(union).
Obviously I didn't implement the MultiSet to spec, but this should get you started:
class MultiSet
attr_accessor :set
def initialize(set)
@set = set
end
# intersection
def &(other)
@set & other.set
end
# dif...
How do I revert master branch to a tag in git?
...o cat ~/diff.patch | git apply, it tells me error: unrecognized input. Any idea? @NitinBansal perhaps since you commented recently?
– Experience111
Jun 18 at 10:16
...
How to replace a single word under cursor?
... delete the word under the cursor (even if the cursor is somewhere in the middle of the word) and enter insert mode.
Also see Vim's documentation for reference:
:help c
:help text-objects
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Is there a better Windows Console Window? [closed]
...ram was designed to work with Far Manager (my favorite shell replacement - file and archive management, command history and completion, powerful editor). But ConEmu can be used with any other console application or simple GUI tools (like PuTTY for example). ConEmu is a live project, open to suggesti...
How to assert output with nosetest/unittest in python?
...---------------------------
#Traceback (most recent call last):
# File "test_stdout.py", line 15, in test_foo
# self.fail("need to run in buffered mode")
#AssertionError: need to run in buffered mode
#
#---------------------------------------------------------------------...
Is it possible to install iOS 6 SDK on Xcode 5?
...
Yes, I just solved the problem today.
Find the SDK file, like iPhoneOS6.1.sdk, in your or your friend's
older Xcode directory.
Copy & put it into the Xcode 5 directory :
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs.
Then you ca...
How do I unset an element in an array in javascript?
...yArray) - otherwise key is a global variable and if you call a function inside that loop that has the same problem, you will get unexpected results.
– ThiefMaster
Dec 26 '11 at 14:16
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