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How to truncate string using SQL server
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You can use
LEFT(column, length)
or
SUBSTRING(column, start index, length)
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Is there a TRY CATCH command in Bash
... in use:
#!/bin/bash
export AnException=100
export AnotherException=101
# start with a try
try
( # open a subshell !!!
echo "do something"
[ someErrorCondition ] && throw $AnException
echo "do something more"
executeCommandThatMightFail || throw $AnotherException
thr...
Understanding Linux /proc/id/maps
...8056000 r-xp 00000000 03:0c 64593 /usr/sbin/gpm
address - This is the starting and ending address of the region in the process's address space
permissions - This describes how pages in the region can be accessed. There are four different permissions: read, write, execute, and shared. If read/wr...
How to format numbers? [duplicate]
... and can leak memory in Node! Tested this on Node 10.16.3: console.log('on start RSS = ', process.memoryUsage().rss / 1024 / 1024); const number = Math.random() * 10; const params = { minimumFractionDigits: 3, maximumFractionDigits: 3, useGrouping: false }; for (let i = 0; i < 100000; i++) { Numb...
Checking Bash exit status of several commands efficiently
... then just do
set -e # DON'T do this. See commentary below.
at the start of the script (but note warning below). Do not bother echoing the error message: let the failing command handle that. In other words, if you do:
#!/bin/sh
set -e # Use caution. eg, don't do this
command1
command...
What is a Memory Heap?
...h malloc) on the heap and then provide the address where this memory chunk starts to the pointer.
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I want my android application to be only run in portrait mode?
... The second option has the horrible side effect that it will restart your activity when started in in Portrait.
– Joakim
Apr 29 '16 at 13:04
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How can Bash execute a command in a different directory context?
...use, and (b) it's not always safe to assume that you can cd back where you started, especially in complex subsystems which may use restrictive permissions internally (see stackoverflow.com/questions/10555284/…).
– geekosaur
May 12 '12 at 19:17
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How to convert a String to its equivalent LINQ Expression Tree?
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@darin, things like starting processes, changing data, etc.
– sisve
May 5 '09 at 9:06
2
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Java LinkedHashMap get first or last entry
...a.util.Map.Entry;
public class PerformanceTest {
private static long startTime;
private static long endTime;
private static LinkedHashMap<Integer, String> linkedmap;
public static void main(String[] args) {
linkedmap = new LinkedHashMap<Integer, String>();
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