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How to throw an exception in C?
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There are no exceptions in C. In C the errors are notified by the returned value of the function, the exit value of the process, signals to the process (Program Error Signals (GNU libc)) or the CPU hardware interruption (or other notification error form the CPU if...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... %>% filter(complete.cases(.))
or this:
library(tidyr)
df %>% drop_na
If you want to filter based on one variable's missingness, use a conditional:
df %>% filter(!is.na(x1))
or
df %>% drop_na(x1)
Other answers indicate that of the solutions above na.omit is much slower but tha...
How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
...C++.
– Jens Gustedt
Nov 15 '11 at 8:05
15
@Jens: Indeed; __STDC_FORMAT_MACROS appears only in a f...
Skip rows during csv import pandas
...hanged the file extension to .csv, the file won't import and will give the error above. To check to see if this is your problem open the file in excel and it will likely say:
"The file format and extension of 'Filename.csv' don't match. The file could be corrupted or unsafe. Unless you trust its...
How to load assemblies in PowerShell?
...hat's not what I see in Powershell v7.0.3 on Windows 10 2004.
# Returns an error
Add-Type -AssemblyName Forms
# Returns an error
[System.Reflection.Assembly]::Load([System.Reflection.AssemblyName]::new('Forms'))
# Works fine
Add-Type -AssemblyName System.Windows.Forms
# Works fine
[System.Reflect...
How to ignore a property in class if null, using json.net
...but i had to use JsonSerializerSettings not JsonSerializer as it showed an error for the last one
– Yazan
Feb 24 '16 at 8:08
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How many spaces will Java String.trim() remove?
In Java, I have a String like this:
17 Answers
17
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Calling async method synchronously
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I still got the error Dialog popup (against my will), with the buttons 'Switch To' or 'Retry'…. however, the call actually executes and does return with a proper response.
– Jonathan Hansen
May 15 '19...
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
... ok, thats a good idea, but for the pre-existing value it will return an error but NOT the value itself, right?
– Discipol
May 3 '13 at 14:41
3
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Convert javascript array to string
I'm trying to iterate over a "value" list and convert it into a string. Here is the code:
14 Answers
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