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bash HISTSIZE vs. HISTFILESIZE?
...gh, I think. Most people won't reach the end of it. I think you should consider summarizing it
– slezica
Jun 7 '14 at 0:44
22
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Check whether a string is not null and not empty
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Almost every library I know defines a utility class called StringUtils, StringUtil or StringHelper, and they usually include the method you are looking for.
My personal favorite is Apache Commons / Lang, where in the StringUtils class, you get both the
StringUtils.isEmpty(...
How do I prevent the modification of a private field in a class?
...is, but if they are mutable something might have to be done to prevent the caller from changing them.
– Lii
Feb 19 '15 at 10:48
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Is it possible to implement a Python for range loop without an iterator variable?
...es its just an acceptable variable name. In the interpreter, it is automatically assigned the last expression you made.
– Unknown
May 4 '09 at 5:24
3
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how to convert milliseconds to date format in android?
...mat.format(dateFormat, Long.parseLong(dateInMilliseconds)).toString();
}
Call this function
convertDate("82233213123","dd/MM/yyyy hh:mm:ss");
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How to concatenate two strings to build a complete path
...u want to use readline so you get completion and all that, add a -e to the call to read:
read -e -p "Enter a directory: " BASEPATH
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Python Pandas Error tokenizing data
...r noted
To solve it, try specifying the sep and/or header arguments when calling read_csv. For instance,
df = pandas.read_csv(fileName, sep='delimiter', header=None)
In the code above, sep defines your delimiter and header=None tells pandas that your source data has no row for headers / column...
How to place the ~/.composer/vendor/bin directory in your PATH?
...ly active for your current terminal session.
If you want it to be automatically set, it depends on the shell you are using. For bash, you can append this line to $HOME/.bashrc using your favorite editor or type the following on the shell
echo 'export PATH="$PATH:$HOME/.composer/vendor/bin"' >&g...
How to check if a table exists in a given schema
... to (by way of being the owner or having some privilege).
The query provided by @kong can return FALSE, but the table can still exist. It answers the question:
How to check whether a table (or view) exists, and the current user has access to it?
SELECT EXISTS (
SELECT FROM information_schema...
“Public key certificate and private key doesn't match” when using Godaddy issued certificate [closed
...d drag the files which you received in .crt file format. Which is normally called as .PEM file.If the certificate loaded in your keytool you can export the certificate as a pfx file from keytool. Then you can separate the pfx file from the private key from the pfx file. Because the pfx file is the c...