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Escape single quote character for use in an SQLite query
...;
Relevant quote from the documentation:
A string constant is formed by enclosing the string in single quotes ('). A single quote within the string can be encoded by putting two single quotes in a row - as in Pascal. C-style escapes using the backslash character are not supported because they ...
How to establish a connection pool in JDBC?
...vailable 3rd party components:
Apache DBCP - This one is
used internally by Tomcat, and by
yours truly.
c3p0
Apache DBCP comes with different example on how to setup a pooling javax.sql.DataSource. Here is one sample that can help you get started.
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Shell - Write variable contents to a file
...able:
starts with -e
starts with -n
starts with -E
contains a \ followed by an n
should not have an extra newline appended after it
and so they cannot be relied upon for arbitrary string contents.
In bash, you can use "here strings" as:
cat <<< "$var" > "$destdir"
As noted in t...
Debugging Scala code with simple-build-tool (sbt) and IntelliJ
What's the easiest way to debug Scala code managed by sbt using IntelliJ's built-in debugger? The documentation from "RunningSbt" from sbt's google code site lists commands for running the main class for a project or the tests, but there seem to be no commands for debugging.
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How can I make a weak protocol reference in 'pure' Swift (without @objc)
...ons is that calling the delegate causes a crash - EXC_BAD_ACCESS (as noted by others elsewhere). This seems to be bug. The only solution I have found is to use @objc and eliminate all Swift data types from the protocol.
– Jim T
Jul 3 '14 at 22:32
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Volatile vs Static in Java
...ject(including static variables) in their respective cache, so update made by t1 to the static variable in its local cache wont reflect in the static variable for t2 cache .
Static variables are used in the context of Object where update made by one object would reflect in all the other objects of...
Using isKindOfClass with Swift
... Chaining sub section Downcasting.
Edit 2
As pointed on the other answer by user @KPM, using the is operator is the right way to do it.
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Create a “with” block on several context managers? [duplicate]
...or instance A lock, a db connection and an ip socket.
You can acquire them by:
5 Answers
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How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP
...he same as the shell’s PATH: one or more directory
pathnames separated by os.pathsep (e.g. colons on Unix or semicolons
on Windows). Non-existent directories are silently ignored.
In addition to normal directories, individual PYTHONPATH entries may
refer to zipfiles containing pure Pyth...
How can I ignore everything under a folder in Mercurial
...he folder "foo" somewhere in the path
^foo matches file or folder starting by foo at the root of the repository
foo$ matches file ending with foo
I hope this will help, I found the HGIGNORE(5) page a bit succinct.
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