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How to have the formatter wrap code with IntelliJ?
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I would like to add one keyword here, which is what one may be looking for: this is what it is called a hard wrap (as opposed to soft wrap -- see the difference here).
– iled
Feb 5 '17 at 22:32
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Celery Received unregistered task of type (run example)
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celeryd is obsolete. Now one should run celery worker e.g for Django like this celery --app=your_app.celery worker --loglevel=info
– andilabs
Jan 14 '16 at 11:25
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Is String.Format as efficient as StringBuilder
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One problem with the benchmarks on Jerry Dixon's page is that he never calls .ToString() on the StringBuilder object. Over a great many iterations, that time makes a big difference, and means that he's not quite comparing ap...
MySQL Cannot drop index needed in a foreign key constraint
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DROP KEY AID ;
gives error.
You can drop the index and create a new one in one ALTER TABLE statement:
ALTER TABLE mytable
DROP KEY AID ,
ADD UNIQUE KEY AID (AID, BID, CID, DID);
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imp...
Differences between Ant and Maven [closed]
Could someone tell me the differences between Ant and Maven? I have never used either. I understand that they are used to automate the building of Java projects, but I do not know where to start from.
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Jquery live() vs delegate() [duplicate]
...enefits of using delegate to be so substantial as to be overwhelming.
The one benefit of live is that its syntax is very close to that of bind:
$('a.myClass').live('click', function() { ... });
delegate, however, uses a slightly more verbose syntax:
$('#containerElement').delegate('a.myClass', ...
What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
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This is exactly why one might prefer the dict() method for initialization, it forces the dictionary keys to be valid identifiers, so they are compatible with, for example, **kwargs, and keys are valid attribute names.
– Ruf...
Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...pread(tmp, y, z)
## x a b c
## 1 x 1 2 3
## 2 y 3 3 2
Using reshape2:
One of the first steps toward the tidyverse was the reshape2 package.
To get a matrix use acast:
library(reshape2)
acast(tmp, x~y, value.var="z")
## a b c
## x 1 2 3
## y 3 3 2
Or to get a data frame, use dcast, as here...
How do I pass a class as a parameter in Java?
...try {
Object ob = c.newInstance();
} catch (InstantiationException ex) {
Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
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Set the value of an input field
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This is one way of doing it:
document.getElementById("mytext").value = "My value";
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