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Differences between “java -cp” and “java -jar”?
...he difference between running a Java application with java -cp CLASSPATH and java -jar JAR_FILE_PATH ? Is one of them preferred to the other for running a Java application? I mean which one of these ways is more expensive for JVM (according to their machine resources usage)?
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Postgres: Distinct but only for one column
...d catch on ordering. I didn't include it because they mentioned wanting a random ordering, but it's important to mention anyway.
– Craig Ringer
Jun 4 '13 at 12:49
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Rails: confused about syntax for passing locals to partials
Understanding Rails "magic" with regards to rendering partials (and passing locals into them).
4 Answers
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What is the in a .vimrc file?
I see <leader> in many .vimrc files, and I am wondering what does it mean?
5 Answers
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When do I need to use AtomicBoolean in Java?
How I can use AtomicBoolean and what is that class for?
5 Answers
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Does a valid XML file require an XML declaration?
...ere it says it "should" be used -- which means it is recommended, but not mandatory. In XML 1.1, however, the declaration is mandatory. See section 2.8 of the XML 1.1 Recommendation, where it says "MUST" be used. It even goes on to state that if the declaration is absent, that automatically implies ...
Grasping the Node JS alternative to multithreading
If I understand correctly Node JS is non blocking...so instead of waiting for a response from a database or other process it moved on to something else and checks back later.
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extract part of a string using bash/cut/split
...om the end
So # means match from the beginning (think of a comment line) and % means from the end. One instance means shortest and two instances means longest.
You can get substrings based on position using numbers:
${MYVAR:3} # Remove the first three chars (leaving 4..end)
${MYVAR::3} # Retu...
Which $_SERVER variables are safe?
Any variable that a user can control, an attacker can also control and is therefore a source of an attack. This is called a "tainted" variable, and is unsafe.
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In CMake, how can I test if the compiler is Clang?
We have a set of cross-platform CMake build scripts , and we support building with Visual C++ and GCC .
5 Answers
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