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How expensive is the lock statement?
I've been experimenting with multi threading and parallel processing and I needed a counter to do some basic counting and statistic analysis of the speed of the processing. To avoid problems with concurrent use of my class I've used a lock statement on a private variable in my class:
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Why do we always prefer using parameters in SQL statements?
...uld be
SELECT empSalary from employee where salary = 0 or 1=1
whereby all empSalaries would be returned.
Further, a user could perform far worse commands against your database, including deleting it If they wrote 0; Drop Table employee:
SELECT empSalary from employee where salary = 0; Drop Ta...
What's the best way to limit text length of EditText in Android
...d:maxLength is equivalent to InputFilter.LengthFilter, so when programmatically changing it's filter, you have modified its XML filter as well.
– mr5
Aug 1 '15 at 3:00
22
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How to read lines of a file in Ruby
...ode to read lines from a file. But when reading a file , the contents are all in one line:
8 Answers
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How to view/delete local storage in Firefox?
...roperties
localStorage.removeItem("foo");
localStorage.clear(); // remove all of localStorage's properties
Storage Inspector Method
Firefox now has a built in storage inspector, which you may need to manually enable. See rahilwazir's answer below.
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Why does JQuery have dollar signs everywhere?
...ring your using noConflict (more below)
var divs = $("div"); // Find all divs
var divs = jQuery("div"); // Also find all divs, because
console.log($ === jQuery); // "true"
If you don't want to use the alias, you don't have to. And if you want $ to not be an alias for jQuery, you can use noC...
How to create a file in Linux from terminal window? [closed]
...also, printf "some long message\nwith newlines\n" > file . Good luck to all.
– shellter
Feb 21 '12 at 16:50
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How to change indentation mode in Atom?
...ed font. After swapping to a mono-spaced font I tried each method and they all do indeed work. Hope this helps someone in the future...
– Native Coder
Jan 24 '17 at 2:38
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Difference between Visibility.Collapsed and Visibility.Hidden
...have focus, you can't navigate to the control using the TAB key, etcetera, all of which still can if it would have a height and width of zero. But again, in terms of layout, you could say that.
– Razzie
May 20 '09 at 8:45
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How to get sp_executesql result into a variable?
...SERT into @tab EXECUTE sp_executesql N'
SELECT 1 AS col1, 2 AS col2
UNION ALL
SELECT 1 AS col1, 2 AS col2
UNION ALL
SELECT 1 AS col1, 2 AS col2'
SELECT * FROM @tab
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