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Check if a Postgres JSON array contains a string
...ovements on a table of 1,000,000 rabbits where each rabbit likes two foods and 10% of them like carrots:
d=# -- Postgres 9.3 solution
d=# explain analyze select info->>'name' from rabbits where exists (
d(# select 1 from json_array_elements(info->'food') as food
d(# where food::text = '"...
Setting ANDROID_HOME enviromental variable on Mac OS X
Could anybody post a working solution for setting ANDROID_HOME via the terminal?
12 Answers
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Get free disk space
...rom this code being copy-pasted from the original?
– Andrew Theken
Aug 13 '13 at 16:16
It doesn't need to end with "\\...
Calling a Fragment method from a parent Activity
I see in the Android Fragments Dev Guide that an "activity can call methods in a fragment by acquiring a reference to the Fragment from FragmentManager, using findFragmentById() or findFragmentByTag() ."
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How do you know a variable type in java?
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@Miguel: since the only way you can handle an int value is in an int variable, there's no way to write code that handles a int value and doesn't know that type. The matter is different in case you're handling a wrapper like Integer, but then the code of this ans...
make iframe height dynamic based on content inside- JQUERY/Javascript
... }
}
</script>
Then, on the IFRAME tag, you hook up the handler like this:
<iframe id="idIframe" onload="iframeLoaded()" ...
I had a situation a while ago where I additionally needed to call iframeLoaded from the IFRAME itself after a form-submission occurred within. You can ...
How do you get the length of a string?
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You don't need jquery, just use yourstring.length. See reference here and also here.
Update:
To support unicode strings, length need to be computed as following:
[..."????"].length
or create an auxiliary function
function uniLen(s) {
return [...s].length
}
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Word wrapping in phpstorm
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right click on the left gutter (line numbers area) and choose Soft Wraps. a ver quick way to enable soft wraps per file
– trve.fa7ad
Sep 24 '14 at 14:03
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App Inventor 2 参考文档 · App Inventor 2 中文网
...d; color: #9a6f06; }
/* 平板：两列，间距收一点 */
@media screen and (max-width: 900px) {
.doc-cards { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.doc-home { padding-bottom: 28px; }
}
/* 手机：单列。卡片改成「图标在左、文字在右」...
What's default HTML/CSS link color?
...he foreground colors of hyperlinks, among other things, are on track for standardization in the form of guidelines for expected default rendering behavior. In particular, taken from the section Phrasing content, the recommended default colors for unvisited and visited hyperlinks are the following:
...