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Open Source Java Profilers [closed]
...ofiler is a stand-alone version of the one in NetBeans. It is a VERY good start.
– Thorbjørn Ravn Andersen
Jun 4 '09 at 6:06
2
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Why is the order in dictionaries and sets arbitrary?
...collisions slow everything down.
The backing store resizes in powers of 4, starting at 8, except for large sets (50k elements) which resize in powers of two: (8, 32, 128, ...).
So when you create an array the backing store is length 8. When it is 5 full and you add an element, it will briefly cont...
MySQL: Can't create table (errno: 150)
...ect are misleading to the question.
The actual answer is this before you start a restore, if you're restoring a dump file with foreign keys:
SET FOREIGN_KEY_CHECKS=0;
because naturally the restore will be creating some constraints before the foreign table even exists.
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do you have kcachegrind like profiling tools for mac [closed]
...0)/qcachegrind.bin exit 0’ > qcachegrind $ chmod +x qcachegrind Then start qcachegrind as usual.
– troseman
Oct 7 '16 at 3:59
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for each loop in Objective-C for accessing NSMutable dictionary
...on't release the enumerator object, and you can't reset it. If you want to start over, you have to ask for a new enumerator object from the dictionary.
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How to print a float with 2 decimal places in Java?
...ces (.2) in decimal representation of a floating-point number (f) from the start of the format specifier (%).
There are other conversion characters you can use besides f:
d: decimal integer
o: octal integer
e: floating-point in scientific notation
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Can I grep only the first n lines of a file?
...would be better to use FNR, because if you use awk with multiple files FNR starts from 0 for each file.
– Vladyslav Savchenko
Oct 4 '16 at 9:09
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An example of how to use getopts in bash
....sh file
source ./getopt.sh
USAGE="-u USER -d DATABASE -p PASS -s SID [ -a START_DATE_TIME ]"
parse_options "${USAGE}" ${@}
echo ${USER}
echo ${START_DATE_TIME}
Old answer:
I recently needed to use a generic approach. I came across with this solution:
#!/bin/bash
# Option Description:
# -------...
C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]
...ive the DateTime? a default value of null, and if it is set to null at the start of your function, then you can initialize it to any value you want.
static void test(DateTime? dt = null)
{
if (dt == null)
{
dt = new DateTime(1981, 03, 01);
}
//...
}
You can call it with a...