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upstream sent too big header while reading response header from upstream
... message: PHP Notice: Undefined index: Firstname in /srv/www/classes/data_convert.php on line 1090
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... // 20 lines of same
PHP message: PHP Notice: Undefined index: Firstname in /srv/www/classes/d...
Access multiple elements of list knowing their index
... = pd.Series([-2, 1, 5, 3, 8, 5, 6])
b = [1, 2, 5]
c = a[b]
You can then convert c back to a list if you want:
c = list(c)
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Parsing Visual Studio Solution files
...ferent in that we wanted VS to sort out the build order for us, so we then converted any dll references to project references where possible.
We then automated this into a build process by running VS via COM automation.
This solution was a little Heath Robinson, but had the advantage that VS was d...
Equivalent to 'app.config' for a library (DLL)
...
public static T Setting<T>(string name)
{
return (T)Convert.ChangeType(AppSettings.Settings[name].Value, typeof(T), nfi);
}
}
App.Config file sample
<add key="Enabled" value="true" />
<add key="ExportPath" value="c:\" />
<add key="Seconds" value="25" />...
sqlite database default time value 'now'
... the timestamp (created_at-column) is saved as unix epoch UTC timezone and converted to local timezone only when necessary.
Using unix epoch saves storage space - 4 bytes integer vs. 24 bytes string when stored as ISO8601 string, see datatypes. If 4 bytes is not enough that can be increased to 6 or...
parseInt(null, 24) === 23… wait, what?
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It's converting null to the string "null" and trying to convert it. For radixes 0 through 23, there are no numerals it can convert, so it returns NaN. At 24, "n", the 14th letter, is added to the numeral system. At 31, "u", the 21...
Pass request headers in a jQuery AJAX GET call
...om header HttpRequestMessage r = new HttpRequestMessage(); int mylogonID = Convert.ToInt32(r.Headers.GetValues("logonID")); error out because The given header was not found. because r.Headers is empty.
– Jeb50
Apr 15 '17 at 16:48
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Convert a list of objects to an array of one of the object's properties
...
This should also work:
AggregateValues("hello", MyList.ConvertAll(c => c.Name).ToArray())
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Replacing Pandas or Numpy Nan with a None to use with MysqlDB
... out an error saying nan is not in the field list. I need to find a way to convert the 'nan' into a NoneType.
7 Answers
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Compare two objects' properties to find differences?
... How to get the difference of two sets?
The fastest way I've found is to convert the sets to dictionaries first, then diff 'em. Here's a generic approach:
static IEnumerable<T> DictionaryDiff<K, T>(Dictionary<K, T> d1, Dictionary<K, T> d2)
{
return from x in d1 where...