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Can someone explain collection_select to me in clear, simple terms?
...specify some collection or array of rows.
# It can be Author.where(..).order(..) or something like that.
# In your example it is:
Author.all,
# then you should specify methods for generating options
:id, # this is name of method that will be called for every row, result will b...
Get the name of an object's type
...stanceof Boolean // false
The literals need to be wrapped in an Object in order for instanceof to work, for example
new Number(3) instanceof Number // true
The .constructor check works fine for literals because the . method invocation implicitly wraps the literals in their respective object type
3...
System.currentTimeMillis vs System.nanoTime
...fferent threads. Even if the events of the threads happen in a predictable order, the difference in nanoseconds can be positive or negative.
System.currentTimeMillis() is safe for use between threads.
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How to change a command line argument in Bash?
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so, in order to change $3, I must change $1 and $2 as well, is it? And change them to what? What does "reset" mean?
– Sriram
Jan 28 '11 at 11:31
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Play audio from a stream using C#
... the source posted in the question to allow usage with Google's TTS API in order to answer the question here:
bool waiting = false;
AutoResetEvent stop = new AutoResetEvent(false);
public void PlayMp3FromUrl(string url, int timeout)
{
using (Stream ms = new MemoryStream())
{
using (...
搭建高可用mongodb集群（三）—— 深入副本集内部机制 - 大数据 & AI - 清...
...为1是不显示的，这里标示出来。
rs.conf();
{
"_id" : "rs0",
"version" : 9,
"members" : [
{
"_id" : 0,
"host" : "192.168.1.136:27017" },
{
...
CSS selector - element with a given child [duplicate]
...er, this is a great example why developers accept other means to an end in order to achieve what they want. Too bad...
– DerpyNerd
Mar 17 '17 at 18:28
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How to modify Github pull request？
...you need more commits
You push c11,c21,c31 to b
The pull request now shows all 6 six commits
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新浪是如何分析处理32亿条实时日志的？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...们起初采用官方Kibana v3，用户提出的类似SQL中的多个group by，画百分比，求指定区间占比等常见需求无法满足。之后通过三斗大神(微博@argv)定制版的Kibana 3满足了一些用户需求。Kibana 4诞生后，代码几乎是对Kibana3的重写，做了大...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
Performance associated with Arrays and Objects in JavaScript (especially Google V8) would be very interesting to document. I find no comprehensive article on this topic anywhere on the Internet.
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