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Inputting a default image in case the src attribute of an html is not valid?

...... <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html lang="en"> <head> <title>Object Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body&g...
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Which is better: … or …

... default value for this attribute. Notices the emphasis above. http://www.w3.org/TR/html4/interact/scripts.html Note: As of HTML5 (far away), the type attribute is not required and is default. share | ...
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Why does InetAddress.isReachable return false, when I can ping the IP address?

... case, it fails. //also, this fails for an invalid address, like "www.sjdosgoogle.com1234sd" InetAddress[] addresses = InetAddress.getAllByName("www.google.com"); for (InetAddress address : addresses) { if (address.isReachable(10000)) { System.out...
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Rsync copy directory contents but not directory itself

... Try rsync -av ~/foo/ user@remote.com:/var/www/bar/ share | improve this answer | follow | ...
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What do linkers do?

...0000 .data + 0 The format of this section is fixed documented at: http://www.sco.com/developers/gabi/2003-12-17/ch4.reloc.html Each entry tells the linker about one address which needs to be relocated, here we have only one for the string. Simplifying a bit, for this particular line we have the ...
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rsync: difference between --size-only and --ignore-times

...es -- the authoritative source is the rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good. For local files, rsync compares metadata and if it looks like it doesn't need to copy the file because ...
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How can I see the request headers made by curl when sending a request to the server?

...hake process when accessing website through HTTPS, such as curl -v https://www.example.com; second, it also prints the CONNECT request if you are visiting the site through HTTP proxy, such as curl --proxy my-proxy:8080 http://www.example.com. I believe it would help more users if some examples of th...
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.htaccess not working apache

... relative. In my case, <Directory /> failed while <Directory /var/www/html/subdir> worked. – Lukas Knuth Apr 26 '18 at 10:18  |  s...
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How can I use MS Visual Studio for Android Development?

... Yes you can: http://www.gavpugh.com/2011/02/04/vs-android-developing-for-android-in-visual-studio/ In case you get "Unable to locate tools.jar. Expected to find it in C:\Program Files (x86)\Java\jre6\lib\tools.jar" you can add an environment ...
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Calculate total seconds in PHP DateInterval

...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...