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Parsing huge logfiles in Node.js - read in line-by-line
...lename).pipe(iconv.decodeStream('utf8'))
this.batchSize = batchSize || 1000
this.lineNumber = 0
this.data = []
this.parseOptions = {delimiter: '\t', columns: true, escape: '/', relax: true}
}
read(callback) {
this.reader
.pipe(es.split())
.pipe(es.mapSync(line =&...
How to display an unordered list in two columns?
...l{
width:210px;
}
li{
background:green;
float:left;
height:100px;
margin:0 10px 10px 0;
width:100px;
}
li:nth-child(even){
margin-right:0;
}
Example here http://jsfiddle.net/Jayx/Qbz9S/1/
If your question is wrong, then the previous answers apply (with a JS fix for lac...
How to wait for all goroutines to finish without using time.Sleep?
... need any data to be passed, so use an empty struct
for i := 0; i < 100; i++ {
go func() {
doSomething()
c <- struct{}{} // signal that the routine has completed
}()
}
// Since we spawned 100 routines, receive 100 messages.
for i := 0; i...
Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
...表一表Nginx配置文件长啥样：
lua_shared_dict phoenix_status 100m;
lua_package_path '/path/to/phoenix/include/?.lua;/path/to/phoenix/vendor/?.lua;;';
init_by_lua_file /path/to/phoenix/config.lua;
server {
listen 80;
server_name foo.com;
root /path/to/root;
...
Resize HTML5 canvas to fit window
...window.innerHeight;
//...drawing code...
}
CSS
html, body {
width: 100%;
height: 100%;
margin: 0;
}
Hasn't had any large negative performance impact for me, so far.
share
|
improve thi...
How to atomically delete keys matching a pattern using Redis
...on of @mcdizzle's idea in his answer to this question. Credit for the idea 100% goes to him.
EDIT: Per Kikito's comment below, if you have more keys to delete than free memory in your Redis server, you'll run into the "too many elements to unpack" error. In that case, do:
for _,k in ipairs(redis.c...
T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]
...an 101 items in the list: "The statement terminated. The maximum recursion 100 has been exhausted before statement completion."
– Mike Schenk
Feb 12 '10 at 17:23
1
...
Tab Vs Space preferences in Vim
...
+100
Creating a stab option in Vim itself would not be easy, but I've whipped up this command/function that you can drop in your .vimrc (...
bpftrace教程【官方】 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
... 0 | |
[800, 1000) 5 |@@@ |
[1000, 1200) 0 | |
[1200, 1400) 0 | ...
How to split/partition a dataset into training and test datasets for, e.g., cross validation?
...ck of the indices:
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
numpy.random.shuffle(x)
training, test = x[:80,:], x[80:,:]
or
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
indices = numpy.random.permutation(x.shape[0])
training_idx, test_idx = indices[:80], in...