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unit testing of private functions with mocha and node.js
...ij yes due to ES6 static exports you cannot use import, export inside of a block. Eventually you will be able to accomplish this sort of thing in ES6 with the System loader. One way to get around it now is to use module.exports = process.env.NODE_ENV === 'production' ? require('prod.js') : require(...
How to check internet access on Android? InetAddress never times out
... on main thread
- does not work on some old devices (Galays S3, etc.), it blocks a while if no internet 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...
How to add \newpage in Rmarkdown in a smart way?
... : object 'opts_knit' not found Calls: <Anonymous> ... process_group.block -> call_block -> eval_lang -> eval -> eval Execution halted opts_knit$get works fine in the console though. ?
– keithpjolley
Sep 29 '18 at 17:34
...
Changing one character in a string
...explicitly to avoid trouble. Everything is machine-oriented. I worked with PHP before learning Python, and that language is a total mess. Regarding your note on fast CPUs I'm totally with you. But a part of that problem is the popular disapproval of premature optimization, which leads to slow interp...
Unique (non-repeating) random numbers in O(1)?
...width you want. E.g. for the example in this question: radix 10, width 3.
Block ciphers normally have a fixed block size of e.g. 64 or 128 bits. But Format-Preserving Encryption allows you to take a standard cipher like AES and make a smaller-width cipher, of whatever radix and width you want, with...
MySQL select 10 random rows from 600K rows fast
...d 2Gb size. See here my code: Fast selection of random rows in MySQL
<?php
$time= microtime_float();
$sql='SELECT COUNT(*) FROM pages';
$rquery= BD_Ejecutar($sql);
list($num_records)=mysql_fetch_row($rquery);
mysql_free_result($rquery);
$sql="SELECT id FROM pages WHERE RAND()*$num_records<2...
How to see full symlink path
....ssh’ -> ‘/home/sumon/ssh-keys/.ssh.personal’
Size: 34 Blocks: 0 IO Block: 4096 symbolic link
Device: 801h/2049d Inode: 25297409 Links: 1
Access: (0777/lrwxrwxrwx) Uid: ( 1000/ sumon) Gid: ( 1000/ sumon)
Access: 2017-09-26 16:41:18.985423932 +0600
Modify: 20...
How to compare two floating point numbers in Bash?
...thon. You have perl installed by default on many Linux/Unix systems.. even php also
– anubhava
Jul 19 '17 at 15:44
1
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How to use transactions with dapper.net?
...20047975/47672): connection must be opened inside of TransctionScope using block in case you choose this answer.
– 0x49D1
Jun 8 '18 at 12:00
...
How to extract text from a PDF? [closed]
...ve have working examples for many languages including: Java, .NET, Python, PHP, Ruby, and others.
I hope it helps.
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