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How do I create directory if none exists using File class in Ruby?
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@JosephK - for me this (misleading) EEXIST error ended up being a permission issue.
– TomG
Dec 17 '19 at 13:19
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How do I find out my python path using python?
...try:
user_paths = os.environ['PYTHONPATH'].split(os.pathsep)
except KeyError:
user_paths = []
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Create web service proxy in Visual Studio from a WSDL file
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Using WSDL.exe didn't work for me (gave me an error about a missing type), but I was able to right-click on my project in VS and select "Add Service Reference." I entered the path to the wsdl file in the Address field and hit "Go." That seemed to be able to find all the ...
Insert auto increment primary key to existing table
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For those like myself getting a Multiple primary key defined error try:
ALTER TABLE `myTable` ADD COLUMN `id` INT AUTO_INCREMENT UNIQUE FIRST NOT NULL;
On MySQL v5.5.31 this set the id column as the primary key for me and populated each row with an incrementing value.
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java.lang.IllegalStateException: The specified child already has a parent
...second time I got this exception. I couldn't find the line where I got the error?
11 Answers
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Why do this() and super() have to be the first statement in a constructor?
...lic MySubClassB(Object[] myArray) {
someMethodOnSuper(); //ERROR super not yet constructed
super(myArray);
}
}
In cases where a parent class has a default constructor the call to super is inserted for you automatically by the compiler. Since every class in J...
Delete everything in a MongoDB database
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Better than db[c], use db.getCollection(c) which avoids errors when collection names are digits.
– Jason R. Coombs
Aug 1 '16 at 16:32
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Why git can't remember my passphrase under Windows
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Just in case someone else runs into this stupid error: make sure you're using the SSH remote URL format (git@host:accountname/reponame.git) not the HTTPS URL otherwise it'll keep on asking for that password...
– dain
Jan 6 '12 at 12:2...
How to create REST URLs without verbs?
...data that's clearly bogus; for your application this could be a validation error; generally reserve 500 for uncaught exceptions
401 Unauthorized when someone accesses your API either without supplying a necessary Authorization header or when the credentials within the Authorization are invalid; don'...
Ruby function to remove all white spaces?
......, which is overly verbose and provides many opportunities for typos and errors of omission.
– joel.neely
Sep 8 '12 at 23:48
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