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How to fix PCH error?
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This is often a caching problem. Usually it can be resolved by holding down the Option key and choosing Product > Clean Build Folder...
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What does status=canceled for a resource mean in Chrome Developer Tools?
...being deleted. I know for a fact it isn't bullet point 3. What do you mean by "Once you touch the contents of an iframe, it can no longer load the resource into it"? Can you give an example?
– styfle
Nov 19 '12 at 18:11
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...nd its count equal newcount, && newcount (priority) can only go up by one.
}
}
Test script to add 10 votes by different users (for this example, id's faked, should user auth.uid in production). Count down by (i--) 10 to see validation fail.
<script src='https://cdn.firebase.com/v0/f...
How do I access the command history from IDLE?
...k you are looking for the history-previous action, which is
bound to Alt+P by default.
You can remap it in "Options -> Configure IDLE -> Keys"
You can also access this command from the top menu in IDLE: "Shell -> Previous History"
Incidentally, why don't you try a better (less ugly, for s...
How to prevent Node.js from exiting while waiting for a callback?
...is_event',callback).
has executed. This call is part of the code written by the module developer .
If a module is a quick port from a synchronous/blocking version, this may not happen til some part of the operation has completed and all the queues might empty before that occurs, allowing node to...
Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
... doesn't help, do the export/import sequence.
Picture for XCode 4.6 added by WP
Edit for XCode 5.0 or newer:
Open XCode -> Preferences ('Command' + ',')
Select the Apple ID from the list.
Click on the SETTING icon near the bottom-left corner of window, and choose EXPORT ACCOUNTS... Xcode a...
Check number of arguments passed to a Bash script
...n [[ ]] with its arithmetic operators like -eq, -ne, -lt, -le, -gt, or -ge by placing the expression as a single string argument:
A=1
[[ 'A + 1' -eq 2 ]] && echo true ## Prints true.
That should be helpful if you would need to combine it with other features of [[ ]] as well.
Take note that...
Custom HTTP headers : naming conventions
...thing to do with vendors, standards bodies, or protocols to be implemented by third parties, except that the developer in question simply needs to avoid header names that may have other intended use by servers, proxies or clients. For this reason, the "X-Gzip/Gzip" and "X-Forwarded-For/Forwarded-For...
When I catch an exception, how do I get the type, file, and line number?
...py", line 51, in <module>
print(4/0)
ZeroDivisionError: division by zero
Process finished with exit code 0
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Why is the parent div height zero when it has floated children
...it were empty).
Setting overflow: hidden on the container will avoid that by establishing a new block formatting context. See methods for containing floats for other techniques and containing floats for an explanation about why CSS was designed this way.
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