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How to compare variables to undefined, if I don’t know whether they exist? [duplicate]
...s a string, and doesn't generate an error if the variable doesn't exist at all.
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How do I pass variables and data from PHP to JavaScript?
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There are actually several approaches to do this. Some require more overhead than others, and some are considered better than others.
In no particular order:
Use AJAX to get the data you need from the server.
Echo the data into the page...
How to make git-diff and git log ignore new and deleted files?
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Is there a way to actually exclude just one type of data? Something like --diff-filter=!D
– Kamil Dziedzic
Aug 29 '14 at 8:44
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Why is it not advisable to have the database and web server on the same machine?
...dicated network connection between the two, more maintenance, etc.), especially for a small application, where neither piece is using too much CPU or memory? Even with two servers, with one server compromised, an attacker could still do serious damage, either by deleting the database, or messing wi...
Maven project.build.directory
...org/apache/maven/model
There you'll find the pom-4.0.0.xml.
It contains all those "short cuts":
<project>
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<build>
<directory>${project.basedir}/target</directory>
<outputDirectory>${project.build.directory}/classes</outputDirectory>...
Why does C# allow {} code blocks without a preceding statement?
Why does C# allow code blocks without a preceding statement (e.g. if , else , for , while )?
9 Answers
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date format yyyy-MM-ddTHH:mm:ssZ
...1123 (HTTP date, the "u" formatter) isn't meant to give time zone offsets. All times are intended to be GMT/UTC.
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Query to count the number of tables I have in MySQL
... Just a note about the use databasename; command. If the database is really big, the command can execute with a long wait time. In that case, login should be done with the option -A, ie: mysql -uroot -p -A, and the command will work fast.
– azurecorn
Jul 21...
JavaScript :How to set a Conditional Break Point in Chrome debugger tools
...r Tools on Breakpoints at developers.google.com (Emphasis mine):
Note: All the breakpoints you have set appear under Breakpoints in the right-hand sidebar. Clicking on the entry jumps to the highlighted line in the source file. Once you have a breakpoint set, right click on the blue tag breakpoi...
How does comparison operator works with null int?
...s, if the value of one of the nullable types is null and the other is not, all comparisons evaluate to false except for !=
So both a > b and a < b evaluate to false since a is null...
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