SEARCH KEYWORD -- Default arguments
Carriage return and line feed
In programming and document editing, we may frequently encounter carriage return and line feed, i.e the well known CRLF. But do you know about the history and difference of carriage return and line feed? Before computer came out, there was a type of teleprinter called Teletype Model 33. It can print 10 characters each second. But there is one problem with this, after finishing printing each line, it will take 0.2 second to move to next line, which is time of printing 2 characters. If a new...
CR,CARRIAGE RETURN,LINE FEED,LF,NEW LINE,CRLF 2017-02-19 08:29:23
Change password of postgres account in Postgres
When installing Postgres on Windows, there is some default account created for user to login. One of them is postgres, but we often don;t know what's the password for this account when we first login using this account. We need to change the password for this account. How to change it? Step 1. Modify the pg_hba.conffile Go to the /data/ and open the pg_hba.conf. # TYPE DATABASE USER ...
Postgres,password, user account 2013-03-04 01:51:02
Samsung will build its own mobile browser
According to the Korean IT News, Samsung is developing its own brand mobile browser based on WebKit, make its the default browser for future Gaxlaxy products.Samsung has posted recruitment advertisements for recruiting Webkit developers in its Advanced Software Platform Lab located in the Silicon Valley. Webkit is an open-source browser engine, Apple's Safari and Google's Chrome are based on this open source engine.For many users, the phone's built-in default browser is still the most used, so S...
Useful Bash Scripts
Many people hack together shell scripts quickly to do simple tasks, but these soon take on a life of their own. Unfortunately shell scripts are full of subtle effects which result in scripts failing in unusual ways. It's possible to write scripts which minimise these problems. In this article, I explain several techniques for writing robust bash scripts. Use set -u ...
Writing robust shellling scripts
Many people hack together shell scripts quickly to do simple tasks, but these soon take on a life of their own. Unfortunately shell scripts are full of subtle effects which result in scripts failing in unusual ways. It's possible to write scripts which minimise these problems. In this article, I explain several techniques for writing robust bash scripts. Use set -u ...
Robust,Shell script,Set,Commands 2012-03-19 13:25:26
Data as code
What is a good command line parser API? A good command line parser should consider below 5 aspects: Support convenient help information generation Support sub commands, for example, git has push,pull,commit sub commands. Support single character option, word option, flag option and option with parameter. Support default option, for example, if no -port is set, set it as 5037 Support usage model, for example, tar's -c and -x is mutually exclusive, they belong to different usage models. Here are...
Command line,API 2013-08-08 22:40:36
The ugliest C feature:
<tgmath.h> is a header provided by the standard C library, introduced in C99 to allow easier porting of Fortran numerical software to C. Fortran, unlike C, provides “intrinsic functionsâ€, which are a part of the language and behave more like operators. While ordinary (“externalâ€) functions behave similarly to C functions with respect to types (the types of arguments and parameters must match and the restult type is fixed), intrinsic functions accept arguments of...
C,
Clojure & Java Interop
About a year ago I got a phone call asking if I wanted to join another team at DRW. The team supports a (primarily) Java application, but the performance requirements would also allow it to be written in a higher level language. I'd been writing Clojure (basically) full-time at that point - so my response was simple: I'd love to join, but I'm going to want to do future development using Clojure. A year later we still have plenty of Java, but the vast majority of the new code I add is Cloj...
Java,Clojure,Interoprability,Commit,Function call 2011-12-29 09:11:22
Getting started with C++ TR1 regular expressions
Overview This article is written for the benefit of someone familiar with regular expressions but not with the use of regular expressions in C++ via the TR1 (C++ Standards Committee Technical Report 1) extensions. Comparisons will be made with Perl for those familiar with Perl, though no knowledge of Perl is required. The focus is not on the syntax of regular expressions per se but rather how to use regular expressions to search for patterns and make replacements. Support for TR1 ext...
Regular expression,Replace,TR1,Extension 2011-08-14 07:25:20
Windows Security Improvements
Traenk is still upset by his recent dive into Windows security. So much more was promised when the merger of Windows 9x and NT lines was announced, so long ago. I honestly expected better.Long ago, Microsoft announced that it would merge the then NT and Windows 9x lines of products. Wow! That means a file access control system, logging, different accounts and filespaces for accounts! Finally! We would have a secure version of Windows for our homes!And we do hav...
Windows,Security,Improvement,Windows NT 2011-09-02 11:54:50
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