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MongoDB: Find a document by non-existence of a field?
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Great point -- thanks. I know this caveat holds true in MongoDB version 1.8.x and before; but I thought queries with $exists field constraints can now make use of indexes in version 2.0 ...?
– dampier
Dec 20 '11 ...
A variable modified inside a while loop is not remembered
...or the original Bourne shell, but don't have access to a running copy just now to check.
There is, however, a very trivial workaround to the problem.
Change the first line of the script from:
#!/bin/bash
to
#!/bin/ksh
Et voila! A read at the end of a pipeline works just fine, assuming you ha...
How to specify an element after which to wrap in css flexbox? [duplicate]
.../blog/flexbox-break-to-new-row/
EDIT: This is really easy to do with Grid now: https://codepen.io/anon/pen/mGONxv?editors=1100
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I don't think you can break after a specific item. The best you can probably do is change the flex-basis at your breakpoints. So:
ul {
flex-f...
Check whether HTML element has scrollbars
...ght
For horizontal scrollbar
el.scrollWidth > el.clientWidth
I know this works for IE8 and Firefox 3.6+ at least.
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.prop('checked',false) or .removeAttr('checked')?
With the introduction of the prop method, now I need to know the accepted way of unchecking a checkbox. Is it:
4 Answers
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Jasmine.js comparing arrays
...yTheEntity "The addMatchers function is no longer on the spec (this) it is now on the global jasmine object." - see Jasmine docs
– rwisch45
May 1 '16 at 10:46
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How to remove all MySQL tables from the command-line without DROP database permissions? [duplicate]
...pointing the issue with backticks. I fixed the query and it runs perfectly now with (group, select and other tables).
– Kostanos
Sep 4 '14 at 13:05
2
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jQuery If DIV Doesn't Have Class “x”
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apologies, didn't mean to put the . in there. Updated now
– Russ Cam
Feb 6 '09 at 15:05
I've adde...
How can I redirect HTTP requests made from an iPad?
...o resolve requests from your iPhone / iPad. So let's setup the Apache part now...
You may need to install some modules first.
sudo apt-get install libapache2-mod-proxy-html
sudo a2enmod proxy proxy_http proxy_html
sudo apache2ctl graceful
Then create a virtual host file, for example /etc/apache...
How to add a custom HTTP header to every WCF call?
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OperationContext.Current.OutgoingMessageHeaders.Add(untyped);
// now make the WCF call within this using block
}
And then, server-side you grab it using:
MessageHeaders headers = OperationContext.Current.IncomingMessageHeaders;
string identity = headers.GetHeader<string>("Identity...