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How to center a “position: absolute” element
...d translate() function with the (negative) value of -50% moves the element by the half of its size. Hence the element will be positioned at the middle.
This is because a percentage value on top/left properties is relative to the height/width of the parent element (which is creating a containing blo...
How does “make” app know default target to build if no target is specified?
...
By default, it begins by processing the first target that does not begin with a . aka the default goal; to do that, it may have to process other targets - specifically, ones the first target depends on.
The GNU Make Manual c...
How can I make gdb save the command history?
...story entries is disabled".
set history remove-duplicates <count>
By default, gdb saves the history into the file ./.gdb_history in the current directory. If you want your command history not to depend on the directory you are in, also include:
set history filename ~/.gdb_history
...
invalid target release: 1.7
... machine, and it wasn't finding my $JAVA_HOME.
On a Mac, this is resolved by:
Right clicking on the module | Module Settings | Project
and adding the 1.7 SDK by selecting "New" in the Project SDK.
Then go to the main IntelliJ IDEA menu | Preferences | Maven | Runner
and select the correct JRE....
Suppress deprecated import warning in Java
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I solved this by changing the import to:
import package.*
then annotating the method that used the deprecated classes with@SuppressWarnings("deprecation")
share...
How do I grep recursively?
...xed string and not a regex, use -F option. it will save you scads of time by not invoking the regex parser. very handy if you are searching lots of files.
– Jeff
May 6 '15 at 17:20
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Immutable array in Java
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By the way, Arrays.asList gives an unmodifiable list
– mauhiz
Oct 26 '15 at 14:42
3
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Rails 3 execute custom sql query without a model
I need to write a standalone ruby script that is supposed to deal with database. I used code given below in rails 3
5 Answe...
deleting rows in numpy array
...ray([[ 0.96488889, 0.73641667, 0.67521429, 0.592875 , 0.53172222]])
By the way, this method is much, much faster than the masked array method for large matrices. For a 2048 x 5 matrix, this method is about 1000x faster.
By the way, user333700's method (from his comment) was slightly faster i...
How to get the number of Characters in a String?
..."))
}
Phrozen adds in the comments:
Actually you can do len() over runes by just type casting.
len([]rune("世界")) will print 2. At leats in Go 1.3.
And with CL 108985 (May 2018, for Go 1.11), len([]rune(string)) is now optimized. (Fixes issue 24923)
The compiler detects len([]rune(string)) patt...