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Can an Option in a Select tag carry multiple values?
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One way to do this, first one an array, 2nd an object:
<select name="">
<option value='{"num_sequence":[0,1,2,3]}'>Option one</option>
<option value='{"foo":"bar","one":"two"}'>Option two</option>
</select&g...
How to expand folded package chain in Intellij IDEA?
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2 Answers
2
Active
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Autolayout - intrinsic size of UIButton does not include title insets
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12 Answers
12
Active
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How do you delete an ActiveRecord object?
... like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destroy and :after_destroy callbacks or any dependent association options.
User.delete_all(condition:...
What is the lifetime of a static variable in a C++ function?
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264
The lifetime of function static variables begins the first time[0] the program flow encounters...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...eated if it wasn't done that way.
This way you can write fast code using 32-bit values in 64-bit mode without having to explicitly break dependencies all the time. Without this behaviour, every single 32-bit instruction in 64-bit mode would have to wait on something that happened before, even thoug...
HTML/Javascript change div content
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SyntacticSyntactic
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How do I run a program with a different working directory from current, from Linux shell?
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edited May 23 '17 at 11:33
Community♦
111 silver badge
answered Apr 24 '09 at 15:46
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postgresql return 0 if returned value is null
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182
use coalesce
COALESCE(value [, ...])
The COALESCE function returns the first of its argument...
What is the direction of stack growth in most modern systems?
...d you not (but still down, at least for zLinux).
ARM: selectable, but Thumb2 has compact encodings only for down (LDMIA = increment after, STMDB = decrement before).
6502: down (but only 256 bytes).
RCA 1802A: any way you want, subject to SCRT implementation.
PDP11: down.
8051: up.
Showing my ag...