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Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
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Also a common problem is something like that client side app crashing and leaving connections open and then opening new ones when it restarts. If this kind of thing happens a lot then you'll run out of connections. Or the app is j...
Apply CSS styles to an element depending on its child elements
...der', '1px solid red');
or
$('div:has(div.a)').addClass('redBorder');
combined with a CSS class:
.redBorder
{
border: 1px solid red;
}
Here's the documentation for the jQuery "has" selector.
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Appending to an empty DataFrame in Pandas?
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Azure Blob Storage vs. File Service [closed]
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What does value & 0xff do in Java?
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@DmitryMinkovsky - The hex bit pattern fe in 8-bit, two's complement corresponds to the decimal value −2. To preserve the value, Integer.valueOf(byte) would need to produce ff ff ff fe (−2 in 32-bit, two's complement), not 00 00 00 fe (decimal value 254). This transformation (fr...
{" was not expected.} Deserializing Twitter XML
...decorate your root entity with the XmlRoot attribute which will be used at compile time.
[XmlRoot(Namespace = "www.contoso.com", ElementName = "MyGroupName", DataType = "string", IsNullable=true)]
Or specify the root attribute when de serializing at runtime.
XmlRootAttribute xRoot = new XmlRootA...
Complex CSS selector for parent of active child [duplicate]
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246
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Why cast an unused function parameter value to void?
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It is there to avoid warnings from the compiler because some parameters are unused.
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Build .so file from .c file using gcc command line
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To generate a shared library you need first to compile your C code with the -fPIC (position independent code) flag.
gcc -c -fPIC hello.c -o hello.o
This will generate an object file (.o), now you take it and create the .so file:
gcc hello.o -shared -o libhello.so
E...
How to grab substring before a specified character jQuery or JavaScript
I am trying to extract everything before the ',' comma. How do I do this in JavaScript or jQuery? I tried this and not working..
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