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How to check internet access on Android? InetAddress never times out
...ernet is available.
B) Connect to a Socket on the Internet (advanced)
// TCP/HTTP/DNS (depending on the port, 53=DNS, 80=HTTP, etc.)
public boolean isOnline() {
try {
int timeoutMs = 1500;
Socket sock = new Socket();
SocketAddress sockaddr = new InetSocketAddress("8.8.8...
How to find where gem files are installed
... (no bundler on my servers). Example is useful: gem which 'logstash/inputs/tcp.rb'
– Cameron Kerr
Jun 27 '18 at 2:03
T...
How to copy file from HDFS to the local file system
...where,
hdfs_input_file_path maybe obtained from http://<<name_node_ip>>:50070/explorer.html
output_path is the local path of the file, where the file is to be copied to.
you may also use get in place of copyToLocal.
...
创业公司倒闭大潮 教你正确烧钱速度？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...所有这些你花掉的钱，都应该能增加公司估值或最终创建IP.
如果你和投资人关系很强大；你手上有一份强劲资产负债表(现金很多)；你业务表现非常强劲；同时基于这些，你认为自己将来能很容易从投资机构那融到钱，那么，...
Differences between fork and exec
...s was used quite a lot (and still is) for daemons which simply listen on a TCP port and fork a copy of themselves to process a specific request while the parent goes back to listening.
Similarly, programs that know they're finished and just want to run another program don't need to fork, exec and t...
Is Mono ready for prime time? [closed]
...ono in a prime-time env.
I run mono servers dealing with giga-bytes of udp/tcp data processing related tasks and couldn't be happier.
There are peculiarities, and one of the most annoying things is that you can't just "build" your msbuild files due to Mono's current state:
MonoDevelop (the IDE) h...
AWS: How to disable all services?
...m/ec2
For example:
Stop running instances, delete volumes, remove elastic IPs, etc.
Otherwise, I recommend sending an email to webservices@amazon.com from the email you used to signup with their service.
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What is the difference between HTTP and REST?
... simplifies application design.
HTTP is itself a stateless protocol unlike TCP and thus RESTful Web Services work seamlessly with the HTTP protocols.
Disadvantages of Statelessness:
One extra layer in the form of heading needs to be added to every request to preserve the client's state.
For se...
Scraping html tables into R data frames using the XML package
...rary(XML)
library(RCurl)
library(rlist)
theurl <- getURL("https://en.wikipedia.org/wiki/Brazil_national_football_team",.opts = list(ssl.verifypeer = FALSE) )
tables <- readHTMLTable(theurl)
tables <- list.clean(tables, fun = is.null, recursive = FALSE)
n.rows <- unlist(lapply(tables, fun...
How to add text at the end of each line in Vim?
... on all lines as soon as you press Esc.
So this is a possible solution:
vip<C-V>$A,<Esc>
That is, in Normal mode, Visual select a paragraph vip, switch to Visual block mode CTRLV, append to all lines $A a comma ,, then press Esc to confirm.
The documentation is at :h v_b_A. There is...