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`require': no such file to load — mkmf (LoadError)
I was trying to install rails on Ubuntu Natty Narwhal 11.04, using ruby1.9.1.
10 Answers
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When should I use Arrow functions in ECMAScript 6?
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A while ago our team migrated all its code (a mid-sized AngularJS app) to JavaScript compiled using Traceur Babel. I'm now using the following rule of thumb for functions in ES6 and beyond:
Use function in the global scope and for Object.prototype prope...
How do I join two lists in Java?
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Gawd, that's a thing in Java 8? Technically you win I guess, but that's a heck of a long line :-)
– Robert Atkins
Sep 9 '13 at 20:03
4
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Set selected option of select box
... code into a $(document).ready:
$(function() {
$("#gate").val('gateway_2');
});
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How to get subarray from array?
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What K_7 said; most especially, monkey-patching the Builtins (Object, Array, Promise, etc) is very naughty. See the famous example of MooTools forcing a rename of the proposed native Array.prototype.contains to Array.prototype.incl...
Host 'xxx.xx.xxx.xxx' is not allowed to connect to this MySQL server
...CREATE USER 'monty'@'localhost' IDENTIFIED BY 'some_pass';
mysql> GRANT ALL PRIVILEGES ON *.* TO 'monty'@'localhost'
-> WITH GRANT OPTION;
mysql> CREATE USER 'monty'@'%' IDENTIFIED BY 'some_pass';
mysql> GRANT ALL PRIVILEGES ON *.* TO 'monty'@'%'
-> WITH GRANT OPTION;
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Check whether or not the current thread is the main thread
...be executed on the main thread, you can:
- (void)someMethod
{
dispatch_block_t block = ^{
// Code for the method goes here
};
if ([NSThread isMainThread])
{
block();
}
else
{
dispatch_async(dispatch_get_main_queue(), block);
}
}
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How to build query string with Javascript
...the input is the form element (DOM Element)
It doesn't handle fields that allow multiple selection.
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Generating a unique machine id
...yourself and hash it to an arbitrary length. See the PDF specification for all SMBIOS structures available.
To query the SMBIOS info from Windows you could use EnumSystemFirmwareEntries, EnumSystemFirmwareTables and GetSystemFirmwareTable.
IIRC, the "unique id" from the CPUID instruction is deprec...
What's the difference between array_merge and array + array?
...ruth regarding the OP). 2. See Yehosef's answer about what array_merge actually does... 3. And see BoltClock's answer about another crucial difference not mentioned here: array_merge resets numeric keys, unlike +.
– Sz.
Sep 20 '18 at 23:31
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