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Spring MVC: Complex object as GET @RequestParam
...eturns the following error for request mentioned in answer:
"Failed to convert value of type 'java.lang.String[]' to required type
'java.lang.Long[]'; nested exception is
java.lang.NumberFormatException: For input string: \"353,234\""
The data class will work only for the following request...
Convert Django Model object to dict with all of the fields intact
How does one convert a Django Model object to a dict with all of its fields? All ideally includes foreign keys and fields with editable=False .
...
HTML character decoding in Objective-C / Cocoa Touch
...hould be substituted.” More like character. This is text, not data; upon converting the text to data, the character may occupy multiple bytes, depending on the character and the encoding.
– Peter Hosey
Jul 9 '09 at 18:17
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How can we make xkcd style graphs?
...r quickie, one-off use: for regular use you should put it in some standard system font directory.)
library(extrafont)
The most useful information about fonts was on the extrafont github site -- this is taken from there
font_import(".") ## because we downloaded to working directory
loadfonts...
PostgreSQL return result set as JSON array?
...ion describes how to generate a JSON array of objects, with each row being converted to a single object. The result looks like this:
[{"a":1,"b":"value1"},{"a":2,"b":"value2"},{"a":3,"b":"value3"}]
9.3 and up
The json_agg function produces this result out of the box. It automatically figures out...
Python list subtraction operation
... @BarnabasSzabolcs: That won't save a thing, because it will convert y to a set before every check (which is similar cost to original work). You'd need to either do yset = set(y) outside the listcomp, then test if item not in yset, or as an egregious hack, do [item for yset in [set(y)]...
If threads share the same PID, how can they be identified?
...
FYI, getpid() returns tgid: asmlinkage long sys_getpid(void) { return current->tgid;}, as shown in www.makelinux.com/
– Duke
Jan 15 '14 at 1:13
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Convert UTC to local time in Rails 3
I'm having trouble converting a UTC Time or TimeWithZone to local time in Rails 3.
6 Answers
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Create a matrix of scatterplots (pairs() equivalent) in ggplot2
...ykey = '.ykey', yvalue = '.yvalue',
na.rm = FALSE, convert = FALSE, factor_key = FALSE) {
vars <- quos(...)
xkey <- enquo(xkey)
xvalue <- enquo(xvalue)
ykey <- enquo(ykey)
yvalue <- enquo(yvalue)
data %>% {
cbind(gather(., key = !!xkey, valu...
ImageConvertor 扩展：免费图像转换器，支持JPG/PNG/WEBP格式转换和图像处...
... 搜索 ImageConvertor 扩展：免费图像转换器，支持JPG/PNG/WEBP格式转换和图像处理
ImageConvertor 扩展
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