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How to replace ${} placeholders in a text file?
...d is ${word}
File script.sh:
#!/bin/sh
#Set variables
i=1
word="dog"
#Read in template one line at the time, and replace variables (more
#natural (and efficient) way, thanks to Jonathan Leffler).
while read line
do
eval echo "$line"
done < "./template.txt"
Output:
#sh script.sh
the nu...
proper hibernate annotation for byte[]
...k - 200k in size). It uses the JPA @Lob annotation, and hibernate 3.1 can read these just fine on all major databases -- it seems to hide the JDBC Blob vendor peculiarities (as it should do).
...
Replacing .NET WebBrowser control with a better browser, like Chrome?
... {
// The user does not have the permissions required to read from the registry key.
}
catch (UnauthorizedAccessException)
{
// The user does not have the necessary registry rights.
}
return result;
...
SPA best practices for authentication and session management
...o the API, where the server/API validates the token. It can't be decrypted/read without the private key (which the server/API stores secretly) Read update.
The new (more secure) flow would be:
Login
User logs in and sends login credentials to API (over SSL/HTTPS)
API receives login credentials
I...
Detecting syllables in a word
...
Read about the TeX approach to this problem for the purposes of hyphenation. Especially see Frank Liang's thesis dissertation Word Hy-phen-a-tion by Com-put-er. His algorithm is very accurate, and then includes a small except...
Tactics for using PHP in a high-load site
...p. Replicating to additional servers typically works well if you have more reads than writes. Sharding is a technique to split your data over many machines.
Caching
You probably don't want to cache in your database. The database is typically your bottleneck, so adding more IO's to it is typicall...
How can I save application settings in a Windows Forms application?
...simple: I have a Windows Forms (.NET 3.5) application that uses a path for reading information. This path can be modified by the user, by using the options form I provide.
...
How can I quickly sum all numbers in a file?
...92
real 0m0.445s
user 0m0.438s
sys 0m0.024s
$ time { s=0;while read l; do s=$((s+$l));done<random_numbers;echo $s; }
16379866392
real 0m9.309s
user 0m8.404s
sys 0m0.887s
$ time { s=0;while read l; do ((s+=l));done<random_numbers;echo $s; }
16379866392
real 0m7.191s
...
Android accelerometer accuracy (Inertial navigation)
...lise is hard given the accelerometer accuracy, and constant fluctuation of readings.
6 Answers
...
Best practices with STDIN in Ruby?
...mentation of the Unix command cat would be:
#!/usr/bin/env ruby
puts ARGF.read
ARGF is your friend when it comes to input; it is a virtual file that gets all input from named files or all from STDIN.
ARGF.each_with_index do |line, idx|
print ARGF.filename, ":", idx, ";", line
end
# print al...