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What are Runtime.getRuntime().totalMemory() and freeMemory()?
...e. The value returned by this method may vary over time, depending on the host environment.
Note that the amount of memory required to hold an object of any given type may be implementation-dependent.
maxMemory()
Returns the maximum amount of memory that the Java virtual machine will attempt to u...
Sleep until a specific time/date
...ch - $current_epoch ))
sleep $sleep_seconds
To add precision down to nanoseconds (effectively more around milliseconds) use e.g. this syntax:
current_epoch=$(date +%s.%N)
target_epoch=$(date -d "20:25:00.12345" +%s.%N)
sleep_seconds=$(echo "$target_epoch - $current_epoch"|bc)
sleep $sleep_seco...
How to get a list of installed Jenkins plugins with name and version pair
...e()} (${plugin.getShortName()}): ${plugin.getVersion()}")
}
Adjust the Closure to your liking (e.g. here it is sorted by the shortName, in the example it is sorted by DisplayName)
share
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How to check command line parameter in “.bat” file?
My OS is Windows Vista. I need to have a ".bat" file where I need to check if user enters any command-line parameter or not. If does then if the parameter equals to -b then I will do something otherwise I will flag "Invalid input". If user does not enter any command-line parameter then I will d...
Is it worthwile to learn assembly language? [closed]
...thermore, the conventional wisdom is to not try to hand-optimise assembly most of the time but let the compiler worry about it. When you see some examples of the twisted things that compilers generate, you will better understand why the conventional wisdom holds.
Example: LFSRs run fast with the ro...
CMake: How to build external projects and include their targets
...dited Jan 25 '15 at 11:55
DavidPostill
6,75288 gold badges3333 silver badges4949 bronze badges
answered Mar 2 '13 at 15:22
...
How do I parse command line arguments in Bash?
...etopt[s])
Usage demo-space-separated.sh -e conf -s /etc -l /usr/lib /etc/hosts
cat >/tmp/demo-space-separated.sh <<'EOF'
#!/bin/bash
POSITIONAL=()
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
-e|--extension)
EXTENSION="$2"
shift # past argument
shift # past value
...
Conditional Variable vs Semaphore
...synchronized access to shared resources. They can be used for similar purposes.
A condition variable is generally used to avoid busy waiting (looping repeatedly while checking a condition) while waiting for a resource to become available. For instance, if you have a thread (or multiple threads)...
Is the creation of Java class files deterministic?
...Are there any compiler options to avoid differences? Is a difference only possibly in theory or does Oracle's javac actually produce different class files for the same input and compiler options?
...
Android Archive Library (aar) vs standard jar
...o aar packages, which are the equivalent to the dll files in a Windows OS, as mentioned here :
4 Answers
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