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What is recursion and when should I use it?
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control jumps to the function
the function's code runs
the function's result is copied into a return value
the stack is rewound to its previous position
control jumps back to where the function was called
Doing all of these steps takes time, usually a little bit more than it takes to iterate thro...
To prevent a memory leak, the JDBC Driver has been forcibly unregistered
...a connection pooled datasource to manage the driver. Note that Tomcat's builtin DBCP does not deregister drivers properly on close. See also bug DBCP-322 which is closed as WONTFIX. You would rather like to replace DBCP by another connection pool which is doing its job better then DBCP. For example ...
Remove all elements contained in another array
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Use the Array.filter() method:
myArray = myArray.filter( function( el ) {
return toRemove.indexOf( el ) < 0;
} );
Small improvement, as browser support for Array.includes() has increased:
myArray = myArray.filter( function( el ) {...
File uploading with Express 4.0: req.files undefined
...ody-parser module only handles JSON and urlencoded form submissions, not multipart (which would be the case if you're uploading files).
For multipart, you'd need to use something like connect-busboy or multer or connect-multiparty (multiparty/formidable is what was originally used in the express bo...
Adding a new array element to a JSON object
...['theTeam']. portion after obj. So: obj.push(...)
– ultrageek
Sep 16 at 2:41
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How to retrieve a single file from a specific revision in Git?
...th from the root of the repository, not your current directory position.
(Although Mike Morearty mentions that, at least with git 1.7.5.4, you can specify a relative path by putting "./" at the beginning of the path. For example:
git show HEAD^^:./test.py
)
Using git restore
With Git 2.23+ (August ...
Select rows of a matrix that meet a condition
...r by number:
m[m[,3] == 11,]
Note that if only one row matches, the result is an integer vector, not a matrix.
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Order Bars in ggplot2 bar graph
...e being used in any statistical model, the wrong parametrisation might result — polynomial contrasts aren't right for nominal data such as this.
## set the levels in order we want
theTable <- within(theTable,
Position <- factor(Position,
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Clone only one branch [duplicate]
...e all the branches, and after it checkout that branch. This is not the result expected. So I recommend you, if it is possible update git to lastest (or >=1.7.10) and the command wouldn't give a error.
– shakaran
Mar 9 '13 at 1:23
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Is there a more elegant way of adding an item to a Dictionary safely?
... if it's already there, but it doesn't have to be there first:
Dictionary<string, object> currentViews = new Dictionary<string, object>();
currentViews["Customers"] = "view1";
currentViews["Customers"] = "view2";
currentViews["Employees"] = "view1";
currentViews["Reports"] = "view1";
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