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What is an efficient way to implement a singleton pattern in Java? [closed]
... return it. The Java specification makes sure that the constructor is only called when the class is first used.
When you have a very large object or heavy construction code AND also have other accessible static methods or fields that might be used before an instance is needed, then and only then yo...
Display image as grayscale using matplotlib
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Prevent row names to be written to file when using write.csv
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I am ashamed because I did try ?write.csv but... Thx aix!
– watbywbarif
Sep 20 '11 at 11:42
7
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Which rows are returned when using LIMIT with OFFSET in MySQL?
...he first 8 results of the query. Then you limit by 18. Which means you consider records 9, 10, 11, 12, 13, 14, 15, 16....24, 25, 26 which are a total of 18 records.
Check this out.
And also the official documentation.
s...
How to enable Ad Hoc Distributed Queries
...Seattle1;Trusted_Connection=yes;',
'SELECT GroupName, Name, DepartmentID
FROM AdventureWorks2012.HumanResources.Department
ORDER BY GroupName, Name') AS a;
GO
Or this documentation link
share
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What is the JavaScript equivalent of var_dump or print_r in PHP? [duplicate]
...ing to the ECMAScript standard:
else if (Object.prototype.toString.call(v) === '[object Array]') {
out = 'array(' + v.length + '): {\n';
for (var i = 0; i < v.length; i++) {
out += repeatString(' ', recursionLevel) + " [" + i + "]: " +
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How do I get the localhost name in PowerShell?
...COMPUTERNAME:String) [], CommandNotFoundException + FullyQualifiedErrorId : CommandNotFoundException
– mathisfun
Mar 14 '18 at 12:21
3
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UILabel text margin [duplicate]
...background set so just changing its origin won't do the trick. It would be ideal to inset the text by 10px or so on the left hand side.
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How to append the output to a file?
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How do I make many-to-many field optional in Django?
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@omouse I think yes, blank is for django validation, and null for the database. In this kind of case (like for IntegerField) it makes no sense to put one without the other I think
– lajarre
Oct 26 '12 at 15:46
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