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What is a “Bitmap heap scan” in a query plan?
...ist of disk pages, and grab every applicable row in each one (hence the so-called recheck cond you see in query plans).
Note, as an aside, how clustering/row order affects the associated costs with either method. If rows are all over the place in a random order, a bitmap index will be cheaper. (And...
Export specific rows from a PostgreSQL table as INSERT SQL script
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The OP calls specifically for data as insert sql script file. I guess he is talking about insert commands, don't you?
– Clodoaldo Neto
Oct 10 '12 at 17:51
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Android set height and width of Custom view programmatically
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The easy way is to set the size programatically like that :
graphView.setLayoutParams(new LayoutParams(width, height));
This is fine if you know the exact size of the view. However, if you want a more flexible approach, you can override the onMeasure() method to m...
Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
...r under LIBRARY, which may be under the heading library or under a heading called TEAMS.
Choose Export near the bottom left side of
the window. Xcode asks you to choose a file name and password.
Edit for Xcode 4.4:
With Xcode 4.4, at step 3 choose Provisioning Profiles under LIBRARY. Then selec...
throw Error('msg') vs throw new Error('msg')
... this is explicitly stated in the specification:
... Thus the function call Error(…) is equivalent to the object creation expression new Error(…) with the same arguments.
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Unable to verify leaf signature
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I am using the NodeJS plugin called nodemailer and nodemailer-smtp-transport and the same general command worked. You need to add this to your createTransport object: tls:{rejectUnauthorized: false}
– LukeP
Sep 15 '...
using data-* attribute with thymeleaf
...ues.
For your scenario, this should do the job:
<div th:attr="data-el_id=${element.getId()}">
XML rules do not allow you to set an attribute twice in a tag, so you can't have more than one th:attr in the same element.
Note: If you want more that one attribute, separate the different attr...
Returning redirect as response to XHR request
...irect (aka a 302 response plus a Location: header) the redirect is automatically followed by the browser. The response to the second request (assuming it also isn't another redirect) is what is exposed to your program.
In fact, you don't have the ability to detect whether a 302 response has occurre...
ipython notebook clear cell output in code
...(x,y)) # plot! overlays the plot
end
Without the clear_output call, all plots appear separately.
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One-liner to take some properties from object in ES 6
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Here's something slimmer, although it doesn't avoid repeating the list of fields. It uses "parameter destructuring" to avoid the need for the v parameter.
({id, title}) => ({id, title})
(See a runnable example in this other answer).
@EthanBrown's solution is more gen...