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Check if bash variable equals 0 [duplicate]
...and appears empty to bash. You can verify this using the below tests which all evaluate to true because xyz is either empty or unset:
if [ -z ] ; then echo "true"; else echo "false"; fi
xyz=""; if [ -z "$xyz" ] ; then echo "true"; else echo "false"; fi
unset xyz; if [ -z "$xyz" ] ; then echo "t...
SET NAMES utf8 in MySQL?
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@ Vinko Vrsalovic: Not necessarily... I had all my files in utf8 but my previous hoster has had the mysql charset set to latin1 and because i havent told mysql that I am sending chars in utf8 (hence set names utf8) it stored them in latin charset and all my special cha...
Difference between left join and right join in SQL Server [duplicate]
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@SilapAliyev That's actually a very good question. Can anyone answer? :D
– Ian Chu Te
Jan 8 '16 at 2:46
21
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How to sort a HashMap in Java [duplicate]
...tion order (which I often like for debugging), or by access order. And finally if you're doing a lot of this you might check out Java 1.6 and NavigableMap, awesome stuff!
– Mark Bennett
Jan 5 '12 at 0:58
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计算统计特征（正态分布）函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...AX_VAR;
double _ave;
//double _var;
double _sam_stdev;
double _all_stdev;
double _sum;
double _sum_2;
int _count;
double _min_v;
double _max_v;
StdevInfo()
: _ave(0.0)
//, _var(MAX_VAR)
, _sam_stdev(sqrt(MAX_VAR))
, _all_stdev(0.0)
, _sum(0.0)
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Maven plugins can not be found in IntelliJ
... had a few of these due to IntelliJ battling my company's proxy server. Finally blew them out. Thanks!
– paultamalunas
Oct 26 '17 at 23:12
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Visual Studio debugging “quick watch” tool and lambda expressions
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Lambda expressions, like anonymous methods, are actually very complex beasts. Even if we rule out Expression (.NET 3.5), that still leaves a lot of complexity, not least being captured variables, which fundamentally re-structure the code that uses them (what you think of as va...
How to load all modules in a folder?
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List all python (.py) files in the current folder and put them as __all__ variable in __init__.py
from os.path import dirname, basename, isfile, join
import glob
modules = glob.glob(join(dirname(__file__), "*.py"))
__all__ = [ ba...
MSBUILD : error MSB1008: Only one project can be specified
...TotalEducationTest\
I am sorry I did not post my finding sooner. I actually had to research again to see what needed to be changed. Who would have thought removing quotes would have worked? I discovered this when viewing a coworkers build for another solution and noticed it did not have quotes.
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How do you use the ? : (conditional) operator in JavaScript?
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This is a one-line shorthand for an if-else statement. It's called the conditional operator.1
Here is an example of code that could be shortened with the conditional operator:
var userType;
if (userIsYoungerThan18) {
userType = "Minor";
} else {
userType = "Adult";
}
if (userIsY...