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C# equivalent of the IsNull() function in SQL Server
In SQL Server you can use the IsNull() function to check if a value is null, and if it is, return another value. Now I am wondering if there is anything similar in C#.
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How to hide columns in HTML table?
...de one of the columns based on the requirement but there is no attribute like visible in the HTML table building. How can I solve my problem?
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How can I tell if a DOM element is visible in the current viewport?
...rnet Explorer before 7.
Original solution (now outdated):
This will check if the element is entirely visible in the current viewport:
function elementInViewport(el) {
var top = el.offsetTop;
var left = el.offsetLeft;
var width = el.offsetWidth;
var height = el.offsetHeight;
while(el.o...
Disabling Chrome Autofill
...autocomplete="new-password" in your password field and that's it. I've checked it, works fine.
Got that tip from Chrome developer in this discussion:
https://bugs.chromium.org/p/chromium/issues/detail?id=370363#c7
P.S. Note that Chrome will attempt to infer autofill behavior from name, id and any te...
git: Switch branch and ignore any changes without committing
I was working on a git branch and was ready to commit my changes, so I made a commit with a useful commit message. I then absentmindedly made minor changes to the code that are not worth keeping. I now want to change branches, but git gives me,
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Scroll Automatically to the Bottom of the Page
Consider I have a list of questions. When I click on the first question, it should automatically take me to the bottom of the page.
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Cannot find or open the PDB file in Visual Studio C++ 2010
...bols for. Go to Tools->Options->Debugging->Symbols and select checkbox "Microsoft Symbol Servers", Visual Studio will download PDBs automatically. Or you may just ignore these warnings if you don't need to see correct call stack in these modules.
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How to get last items of a list in Python?
...o do it with slicing, but I can't seem to get it. I can get the first 9 like this:
5 Answers
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Getting the application's directory from a WPF application
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ConcurrentHashMap vs Synchronized HashMap
...chronized HashMap：
Each method is synchronized using an object level lock. So the get and put methods on synchMap acquire a lock.
Locking the entire collection is a performance overhead. While one thread holds on to the lock, no other thread can use the collection.
ConcurrentHashMap was introd...