Best Practice: Convert 1 and 0 to true and false in Javascript

Posted by Raffael on 03/14/201603/14/2016 Posted in JavaScript Tagged best practice, int to boolean, JavaScript, JS, string to boolean

1 und 0 zu true und false in Javascript
Today there will be only a very short post. There are certainly many ways to convert 0 and 1 in Javascript to true and false.
The following way to reach the wanted result I’ve seen today. I think it is probably the shortest and most elegant way to go. In addition, it works not only for integer values, but also for the string representations of 0 to 1.
So this is the stuff I like to add to my personal “POP”-collection (pearls of programming)…
0 and 1 to true and false
To convert the integers 0 and 1 to boolean, it is sufficient to use the not-operator twice.

var thisIsFalse = !!0; //false
var thisIsTrue = !!1; //true

Why it works? Here is a short explanation. 1 is a valid value and thus true. When we write !1 now, then we create a false condition […]

Open SAP GUI from HTML out of your webbrowser

Posted by Raffael on 11/12/201511/12/2015 Posted in HTML, JavaScript, SAP Tagged open SAP from browser, open SAP GUI from html, SAP, SAP GUI

SAP aus Browser aufrufen Some time ago I got into a discussion about whether it is possible to open transactions in the SAP GUI out of the browser. The opinion of the colleagues was unanimous – start SAP GUI from browser is something not be done.
However I have maintained and created a small proof-of-concept. Because it works. Ok, it’s not pretty, but it works. And that’s how to call the SAP GUI from the browser.
sapshcut.exe and what you can do with it
The solution works (among other things) using the sapshcut.exe (short for SAP Shortcut). This .exe file allows to start the SAP GUI parameterized. The possible parameters ranging from user via logon language up to the executed transaction. A complete list of possible parameters can be obtained by calling the sapshcut.exe with the parameter -?. (See screenshots below.)
sapshcut.exe - help from cmd

How to make remote IPs available on OS X’ PPTP VPN connections

Posted by Raffael on 11/11/2015 Posted in Apple, MAC OS X Tagged add route, Mac OSX, OSX, PPTP, VPN PPTP

OSX VPN Routing Let me describe the initial situation: I connect my Macbook via PPTP VPN with an remote network using the standard OSX VPN client. While the VPN connection is established, however, there is the following problem.
All devices on the remote network get IP addresses within the range 10.8.0.0/24 assigned. However, the local IP range on the external network is 192.168.178.0/24. A server, which (as local user of the remote network) can be reached via 192.168.178.11 for example, now (via VPN connection) has the IP 10.8.0.45. Unfortunately it is not clear which server got what IP from the 10.8.0.0/24 block of adresses.
Add routing rule for PPTP VPN connection on OSX
The solution is quite simple in this case. The only condition so that subsequent workaround will be successful is that the IP range in which the Macbook is, is an other than the local range of the external network. If the Macbook is […]

Change “View Source” editor in Internet Explorer and Edge

Posted by Raffael on 11/08/201511/08/2015 Posted in Tutorials Tagged Change html editor in internet explorer, Edge, How to change View source editor, IE, Internet Explorer, Microsoft

Switch Editor in Internet Explorer
Those of you, who create websites do well to ensure that these are displayed correctly in all major browsers. But as most of you should know, due to differences between Internet Explorer, Firefox, Chrome and Safari this succeeds only in the rarest cases right away.
Thus, as a developer you’ll frequently have a look to the source code of a website, which in most cases just hurts in Internet Explorer, because the default editor of the “View source code” function is just a new window in IE instead of a good editor. Maybe it’s ok for a quick look, but not for getting work done.
Anyone who prefers to use Notepad++, SublimeText or another editor of choice to display the source code of a webpage in Internet Explorer, should give me his attention for the next minutes. In the following […]