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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
Regarding this .NET unhandled exception message:
5 Answers
5
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Convert string to Python class object?
... open to anything. If you have malicious, evil users who might maliciously and evilly pass bad values to eval, they can just edit the python source. Since they can just edit the python source, the door is, was, and always will be open.
– S.Lott
Sep 19 '13 at 12...
AttributeError: 'module' object has no attribute 'urlopen'
...
@Sergio: exactly! And through the indentation you see where your file is still opened.
– eumiro
Oct 19 '10 at 15:16
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Is there a way to “autosign” commits in Git with a GPG key?
...e a requirement that I use the same form of my name in
my git repository and my gpg key.
Further I might have multiple keys in my keyring, and might want to use one that doesn't match up with the address I use in commit messages.
This patch adds a configuration entry "user.signingKey" which...
How to remove all whitespace from a string?
...ical tab, form feed
x <- c(
" x y ", # spaces before, after and in between
" \u2190 \u2192 ", # contains unicode chars
paste0( # varied whitespace
whitespace,
"x",
whitespace,
"y",
whitespace,
collapse = ""
),
NA ...
String is immutable. What exactly is the meaning? [duplicate]
...ith the fuss of immutability, let's just take a look into the String class and its functionality a little before coming to any conclusion.
This is how String works:
String str = "knowledge";
This, as usual, creates a string containing "knowledge" and assigns it a reference str. Simple enough? Le...
JavaScript: clone a function
...t wrap twice when called twice, but otherwise, ok.
– Andrey Shchekin
Dec 2 '09 at 19:25
apply is used to pass the argu...
Generate fixed length Strings filled with whitespaces
... Java 1.5 we can use the method java.lang.String.format(String, Object...) and use printf like format.
The format string "%1$15s" do the job. Where 1$ indicates the argument index, s indicates that the argument is a String and 15 represents the minimal width of the String.
Putting it all together: ...
Should a function have only one return statement?
... Agreed. Although having multiple exit point can get out of hand, I definately think it's better than putting your entire function in an IF block. Use return as often as it makes sense to keep your code readable.
– Joshua Carmody
Sep 19 '08 at 20:...
Python Remove last 3 characters of a string
...racters are so I can't use rstrip , I also need to remove any white space and convert to upper-case
10 Answers
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