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ReactJS - Does render get called any time “setState” is called?
...only time when render isn't called is when some branch is moved to another root, where theoretically we don't need to re-render anything. In your example, TimeInChild is a child component of Main, so it also gets re-rendered when the state of Main changes.
React doesn't compare state data. When setS...
Accept server's self-signed ssl certificate in Java client
...t domain had gotten its certificate from this provider. See Will the cross root cover trust by the default list in the JDK/JRE? -- read down a couple entries. Also see Which browsers and operating systems support Let’s Encrypt.
So, in order to connect to the domain I was interested in, which had ...
What is the difference between buffer and cache memory in Linux?
...g lots of I/O will use lots of memory for buffers. I'm bulkloading a 100GB MySQL/InnoDB database and buffers go above 2GB all the time.
– Marcelo Pacheco
Mar 17 at 3:15
add a ...
How to get the directory of the currently running file?
...ble to use os.Getwd
func Getwd() (pwd string, err error)
Getwd returns a rooted path name corresponding to the current directory. If the current directory can be reached via multiple paths (due to symbolic links), Getwd may return any one of them.
For example:
package main
import (
"fmt"
...
Difference between HBase and Hadoop/HDFS
...d when you have real-time needs.
An analogous comparison would be between MySQL and Ext4.
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How do I find where JDK is installed on my windows machine?
... Leopard):
$ which java
/usr/bin/java
$ ls -l /usr/bin/java
lrwxr-xr-x 1 root wheel 74 Nov 7 07:59 /usr/bin/java -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java
If you are using Windows:
c:\> for %i in (java.exe) do @echo. %~$PATH:i
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How can I ignore everything under a folder in Mercurial
...h. Anchors apply to this path.
So:
Glob applies to path elements and is rooted to element parts
foo matches any folder (or file) named foo (not to "foobar" nor "barfoo")
*foo* matches any folder or file with "foo" in the name
foo/bar* matches all files in "foo" folder starting with "bar"
Reg...
How to stop and restart memcached server?
...
Using root, try something like this:
/etc/init.d/memcached restart
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How to turn off INFO logging in Spark?
...Edit log4j.properties:
# Set everything to be logged to the console
log4j.rootCategory=INFO, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.target=System.err
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.Conversion...
Android Eclipse - Could not find *.apk
...ng android apps, refuses to create the default.properties file (in the app root directory). I've just copied one from another app and it works fine. Simple contents, for Android 2.2 project it just says (ignoring comments):
target=android-8
fwiw
...