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Why does ConcurrentHashMap prevent null keys and values?
...e relational database world, null != null, so using a null as a key has no meaning.
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How to set the thumbnail image on HTML5 video?
Is there a way to set thumbnail image on HTML5 video?
I want to see some pictures before play.
My code looks like this:
7 A...
How to resolve the C:\fakepath?
...to know your local machine's filesystem. It would be nice if all browsers did this.
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How to check file input size with jQuery?
... upload capabilities and I would like to be able to have some nice client side error reporting if the file the user is trying to upload is too big, is there a way to check against file size with jQuery, either purely on the client or somehow posting the file back to the server to check?
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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
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Yes, making it clear that you mean this to be empty vs. something that might be added to later is good for your code.
– Jay Bazuzi
Dec 12 '09 at 17:43
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Why is “except: pass” a bad programming practice?
...s, you catch an exception because you can positively recover from it. That means that you are prepared for the exception and have some alternative plan which you will follow in case of that exception.
For example, when you ask for the user to input a number, you can convert the input using int() wh...
How do I get the APK of an installed app without root access?
...issions on that directory are rwxrwx--x. Execute permission on a directory means you can access it, however lack of read permission means you cannot obtain a listing of its contents -- so in order to access it you must know the name of the file that you will be accessing. Android's package manager w...
How to make CSS width to fill parent?
...l have different rendering rules.
So for:
table#bar you need to set the width to 100% otherwise it will be only be as wide as it determines it needs to be. However, if the table rows total width is greater than the width of bar it will expand to its needed width. IF i recall you can counteract thi...
Insert a line at specific line number with sed or awk
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No. -i means "modify the specified file in place". Insert vs. append is achieved with '8isomething' vs. '8asomething', independent from the -i-switch.
– user unknown
Dec 23 '14 at 1:28
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How to open an elevated cmd using command line for Windows?
...unAs"
Move sudo.bat to a folder in your PATH; if you don't know what that means, just move these files to c:\windows\
Now sudo will work in Run dialog (win+r) or in explorer address bar (this is the best part :))
Method 2: WITH a 3rd party program
Download NirCmd and unzip it.
Create a file cal...