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Easy way to test a URL for 404 in PHP?
... you are using PHP's curl bindings, you can check the error code using curl_getinfo as such:
$handle = curl_init($url);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
/* Get the HTML or whatever is linked in $url. */
$response = curl_exec($handle);
/* Check for 404 (file not found). */
$htt...
remove legend title in ggplot
...
You were almost there : just add theme(legend.title=element_blank())
ggplot(df, aes(x, y, colour=g)) +
geom_line(stat="identity") +
theme(legend.position="bottom") +
theme(legend.title=element_blank())
This page on Cookbook for R gives plenty of details on how to customize ...
Git status ignore line endings / identical files / windows & linux environment / dropbox / mled
...files are checked into the repository. ref: git-scm.com/docs/gitattributes#_code_text_code
– Vince
Nov 14 '18 at 2:27
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Creating a new user and password with Ansible
...ss
user:
name: {{ uusername }}
password: {{ upassword | password_hash('sha512') }}
groups: admin append=yes
when: assigned_role == "yes"
- name: Creating users "{{ uusername }}" without admin access
user:
name: {{ uusername }}
password: {{ upassword | password_hash('sha...
How do I import the javax.servlet API in my Eclipse project?
...compilation errors:
java.lang.NullPointerException at org.apache.jsp.index_jsp._jspInit
java.lang.NoClassDefFoundError: javax/el/ELResolver
java.lang.NoSuchFieldError: IS_DIR
java.lang.NoSuchMethodError: javax.servlet.jsp.PageContext.getELContext()Ljavax/el/ELContext;
java.lang.AbstractMethodError:...
Regular expression \p{L} and \p{N}
...not be using alternation when a character class would suffice:
[\p{L}\p{N}_.-]*
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How do you check if a variable is an array in JavaScript? [duplicate]
...re https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
variable instanceof Array
This method runs about 1/3 the speed as the first example. Still pretty solid, looks cleaner, if you're all about pretty code and not so much on performance. Note that check...
Enabling WiFi on Android Emulator
... elsewhere.)
In theory, linux (the kernel underlying android) has mac80211_hwsim driver, which simulates WiFi. It can be used to set up several WiFi devices (an acces point, and another WiFi device, and so on), which would make up a WiFi network.
It's useful for testing WiFi programs under linux. ...
When should null values of Boolean be used?
...lean(true);
Please see autoboxing here: http://en.wikipedia.org/wiki/Boxing_%28computer_science%29#Autoboxing
Perhaps this is where much of the confusion comes from.
EDIT2: Please read comments below.
If anyone has an idea of how to restructure my answer to incorporate this, please do so.
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How do I write a correct micro-benchmark in Java?
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Some paper from javaOne: azulsystems.com/events/javaone_2009/session/…
– bestsss
Jun 5 '11 at 12:29
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