sune - Developer IT

How does a web server/the http protocol handle version control and compression?

- by Sune Rasmussen

When a client browser requests a file from the web server, I know that some kind of check is performed, because the files needed to serve the web page may already be cached by the web browser. So, if a file exists in the cache, no files are sent. But if the file on the server has changed since the file was cached in the browser, the file is sent and updated anyhow. Then, if you have compression like gzipping enabled on the server, the files that are to be provided to the client must be gzipped on the way, requiring some amount of server side processing. But how is this managed? The logical approach seems to me, that the web server should have a cache as well, containing the newest version of all files that have been requested within a certain time span, thus a compressed version of these files, so that compression would not have to be done each time a files is requested. And also, how are files eventually requested? Does the browser ask for files, each time it encounters one in the HTML code and the specific file is not stored in the local cache, or does it sum all the files that are needed up and ask for the whole bunch at the same time? But that's only guessing from a programming point of view, and I don't really know. If the answers are very different among web server systems, I'm primarily interested in Apache, but other answers are appreciated, too.

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Lenovo G500 Re-booting failed

- by Sune

I have a Lenovo G500. Yesterday it asked me to reboot the system. I did. Now it wont come back on. I have tried everything I read online like taking out the battery and holding the power button in for 20 seconds, then switching on the pc with only the ac adapter plugged in. I still only see the backlight of the pc, nothing else. I also tried to hold in the Fn key and tried all other F keys (F2, F12, etc.) I also pressed that little button next to the power button, but nothing is responding. Please help.

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CSS fluid layout with 2 columms

- by Sune

Ive building a website with a fluid layout. The structure is: <div id="maincontainer"> <div id="topsection"> <div class="innertube"><h1>CSS Liquid Layout #2.2- (Fluid-Fixed)</h1></div> </div> <div id="contentwrapper"> <div id="contentcolumn"> <div class="innertube"><b>Content Column:</b></div> </div> </div> <div id="rightcolumn"> <div class="innertube"><b>Right Column: <em>200px</em></b> <script type="text/javascript">filltext(14);</script></div> </div> <div id="footer"><a href="#">Some footer</a></div> </div> My problem is when my contentcolumm grows(height) I cant get my right columm too grow with. I can fix the problem with javascript where I measure out the contentcolumn height and set the same height on my rightcolumm. But Im wondering if there are any better css solution. here is clip from my css: #contentwrapper{ float: left; width: 100%; background:#FF7000; } #contentcolumn{ margin-right: 200px; } #rightcolumn{ float: left; width: 200px; margin-left: -200px; background: #BBBBBB; }

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Repeater itemdatabound event value type and reference type

- by Sune

Im trying to bind a list with datetime objects to my repeater. if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item) { DateTime actualDate = e.Item.DataItem as DateTime; } When I want access the itemdatabound event on the repeater Then I get an errormessage which says that DateTime is a valuetype and not a reference type. My solution is that a wrap the datetime in a custom object (reference type) and pass that to the repeater datasource instead of the datetime. But Im wondering if there are other solutions where the repeater takes valuetypes (DateTime objects)........

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multiple droppable

- by Sune

Ive have multiple droppable divs (which all have the same size) and one draggable div. The draggable div is 3 times bigger than one droppable. When I drag the draggable div on the droppables divs I want to find which droppable has been affeckted. My code looks like this: $(function () { $(".draggable").draggable({ drag: function (event, ui) { } }); $(".droppable").droppable({ drop: function (event, ui) { alert(this.id); } }); }); the html <div style="height:100px; width:200px; border-bottom:1px solid red; " id="Div0" class="droppable"> drop in me1! </div> <div style="height:100px; width:200px; border-bottom:1px solid red;" id="Div1" class="droppable"> drop in me2! </div> <div style="height:100px; width:200px; border-bottom:1px solid red; " id="Div2" class="droppable"> drop in me2! </div> <div style="height:100px; width:200px; border-bottom:1px solid red; " id="Div3" class="droppable"> drop in me2! </div> <div style="height:100px; width:200px; border-bottom:1px solid red; " id="Div4" class="droppable"> drop in me2! </div> <div style="height:100px; width:200px; border-bottom:1px solid red; " id="Div5" class="droppable"> drop in me2! </div> <div style="height:100px; width:200px; border-bottom:1px solid red; " id="Div6" class="droppable"> drop in me2! </div> <div style="height:100px; width:200px; border-bottom:1px solid red; " id="Div7" class="droppable"> drop in me2! </div> <div class="draggable" id="drag" style="height:300px; width:50px; border:1px solid black;"><span>Drag</span></div> But my alert only shows the first which my draggable div (Div0) hits, how can I find the missing (Div1 and Div2), which also is affeckted?? Here's a guy with the same problem : http://forum.jquery.com/topic/drop-onto-multiple-droppable-elements-at-once

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calender with multiple data sources at once??

- by Sune

Im looking for a (free) solution to a bookingcalender. Among many candidates Ive found the Jquery Full Calender which has many cool features. One of the reason that I like this one is because it has "drag and drop" and resize, which I also need. But I also need to have the dayview where I the columms monday, tuesday, wedensday, thursday friday .... gets replaced with fx. Room1, Room2, Room3, Room4, Room5, Room6, Room7. Ive found some examples on: http://www.devexpress.com/Products/NET/Controls/ASP/Scheduler/resources.xml http://demos.telerik.com/aspnet-ajax/scheduler/examples/resourceavailability/defaultcs.aspx which has the functionality im after. Ive read others who has raised the same quistion on: http://code.google.com/p/jquery-week-calendar/issues/detail?id=35 but with no final solution. Are there any out there who has or knows some good links for want Im looking for?

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Can jQuery animate() behave differently for specific elements within my selection?

- by Sune Rasmussen

I have a selection of elements in a jQuery object. I want to animate their font sizes, but as I have both the headlines and various paragraphs in the selection, they should be animated slightly differently, as the headlines should end up with a larger font size than the paragraphs. I already have this information stored in the jQuery data cache. I can do that. But, not unless I use several calls to the animate function, one for each specific, slightly different animation, perhaps using event triggering or setTimeout() calls. Of course I want to avoid this, as it's damn ugly and an odd way around. Much prettier if it could be done internally, within the animation ... Any help would be much appreciated.

Developer IT