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Which equals operator (== vs ===) should be used in JavaScript comparisons?
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var1 == var2
When using == for JavaScript equality testing, some
funky conversions take place.
Moral of the story:
Use === unless you fully understand the
conversions that take place with ==.
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How to configure 'git log' to show 'commit date'
...ve.
For example:
$ git log --graph --pretty=format:'%C(auto)%h%d (%cr) %cn <%ce> %s'
You can define an alias in git to make this easier to use. I have the following in my .gitconfig:
[alias]
# see `git help log` for detailed help.
# %h: abbreviated commit hash
# %d: ref names, like t...
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How to get current relative directory of your Makefile?
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I tried many of these answers, but on my AIX system with gnu make 3.80 I needed to do some things old school.
Turns out that lastword, abspath and realpath were not added until 3.81. :(
mkfile_path := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
mkfile_dir:=...
Get output parameter value in ADO.NET
...ad]
static void Main(string[] args)
{
using( SqlConnection cn = new SqlConnection("server=(local);Database=Northwind;user id=sa;password=;"))
{
SqlCommand cmd = new SqlCommand("CustOrderOne", cn);
cmd.CommandType=CommandType.StoredProcedure ;
SqlParam...
Select where count of one field is greater than one
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I give an example up on Group By between two table in Sql:
Select cn.name,ct.name,count(ct.id) totalcity
from city ct left join country cn on ct.countryid = cn.id
Group By cn.name,ct.name
Having totalcity > 2
s...
What are the differences between Perl, Python, AWK and sed? [closed]
...unced "tim-toady"). Perl has 'objects', but it is more of an add-on than a fundamental part of the language.
Python was written last, and probably in part as a reaction to Perl. It has some interesting syntactic ideas (indenting to indicate levels - no braces or equivalents). It is more fundamental...
How to give ASP.NET access to a private key in a certificate in the certificate store?
...9Certificate2 serverCert;
clientCert = GetCertificateIfExist("CN=127.0.0.1", StoreName.My, StoreLocation.LocalMachine);
serverCert = GetCertificateIfExist("CN=MyROOTCA", StoreName.Root, StoreLocation.LocalMachine);
if (clientCert == null || serverCert == null)
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RVM: Uninstalling all gems of a gemset
...orks well in Ubuntu 10.10
gem list | cut -d" " -f1 | xargs gem uninstall -aIx
PS - removes all local gems. Use sudo accordingly.
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Using generic std::function objects with member functions in one class
For one class I want to store some function pointers to member functions of the same class in one map storing std::function objects. But I fail right at the beginning with this code:
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