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Do rails rake tasks provide access to ActiveRecord models?
I am trying to create a custom rake task, but it seems I dont have access to my models. I thought this was something implicitly included with rails task.
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What is the difference between exit and return? [duplicate]
... return at the end of the function.
Last point, exit() come in two flavors _exit() and exit(). The difference between the forms is that exit() (and return from main) calls functions registered using atexit() or on_exit() before really terminating the process while _exit() (from #include <unistd....
MySQL: determine which database is selected?
... that.
– Jan Thomä
Feb 26 '18 at 7:32
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show 1 more comment
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How to check whether mod_rewrite is enable on server?
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– João Pimentel Ferreira
Jan 6 '18 at 23:32
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How can I shuffle the lines of a text file on the Unix command line or in a shell script?
...randomly.
– SeMeKh
Aug 28 '12 at 14:32
146
For OS X users: brew install coreutils, then use gshuf...
Concatenate multiple files but include filename as section headers
...its number.
– anol
Jul 25 '16 at 11:32
1
Of note, passing -n to grep also yields line numbers whi...
MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ngodb.org/downloads
实验环境使用的Mongodb版本为mongodb-linux-x86_64-2.6.0
由三台虚拟机搭建，配置为单核,1G内存。实验环境如下:
MongoDB的副本集不同于以往的主从模式。
在集群Master故障的时候，副本集可以自动投票，选举出新的Maste...
Finding out whether a string is numeric or not
...m wrong.
– markckim
Sep 29 '15 at 6:32
2
@Supertecnoboff It seems this is something that has chan...
What is “callback hell” and how and why does RX solve it?
...de looks like this ( Scala.js ) :
def render: Unit => VdomElement = { _ =>
<.div(
<.hr,
<.h2("Note Selector"),
<.hr,
<.br,
noteSelectorTable.comp(),
NoteCreatorWidget().createNewNoteButton.comp(),
NoteEditorWidget(selectedNote.updates()).comp(),
...
How do I fit an image (img) inside a div and keep the aspect ratio?
I have a 48x48 div and inside it there is an img element, I want to fit it into the div without losing any part, in the mean time the ratio is kept, is it achievable using html and css?
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