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Remove insignificant trailing zeros from a number?
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If you convert it to a string it will not display any trailing zeros, which aren't stored in the variable in the first place since it was created as a Number, not a String.
var n = 1.245000
var noZeroes = n.toString() // "1.245"
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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 .
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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)]...
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...
What is uintptr_t data type
...igned integer type with the property that any valid pointer to void can be converted to this type, then converted back to pointer to void, and the result will compare equal to the original pointer".
Take this to mean what it says. It doesn't say anything about size.
uintptr_t might be the same siz...
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...
How to check for a valid Base64 encoded string
... way in C# to see if a string is Base 64 encoded other than just trying to convert it and see if there is an error? I have code code like this:
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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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How to check if an appSettings key exists?
...ey, searchKey, compare) == 0)) {
try
{ // see if it can be converted.
var converter = TypeDescriptor.GetConverter(typeof(T));
if (converter != null) defaultValue = (T)converter.ConvertFromString(ConfigurationManager.AppSettings.GetValues(searchKey).First());
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