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How can I view an old version of a file with Git?
... to get it.
– Tiina
Oct 11 '17 at 1:03
this command op - even auto completes from memory - tested on a deleted directo...
Get average color of image via Javascript
...
answered Dec 7 '11 at 9:03
J. ChaseJ. Chase
1,13388 silver badges1010 bronze badges
...
What is the difference between '>' and a space in CSS selectors?
...cause it's not immediately after a div tag.
Space
div span {
color: #0A0 ;
}
<body>
<div>
<div>
<span>Hello...</span>
<p><span>Hello!</span></p>
</div>
<span>World!</span>
</div>
</bo...
write a shell script to ssh to a remote machine and execute commands
...ple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ssh, for example:
#!/bin/bash
USERNAME=someUser
HOSTS="host1 host2 host3"
S...
Verify if a point is Land or Water in Google Maps
...neous results.
#The following assumes that the latitude longitude is in WGS84
#This is identified by the number "4236", as in "EPSG:4326"
#We will create a transformation between this and the shapefile's
#project, whatever it may be
geo_ref = lyr_in.GetSpatialRef()
point_ref=ogr.osr.SpatialReference...
Exact time measurement for performance testing [duplicate]
...y property.
– LukeH
Jun 9 '09 at 11:03
32
Also, the Stopwatch.StartNew() static method is a conve...
Difference between Dictionary and Hashtable [duplicate]
...e); }
– Mike
Oct 9 '18 at 3:03
add a comment
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...
how does multiplication differ for NumPy Matrix vs Array classes?
...)
>>> a1 * a2t # same as NP.dot(a1, a2t)
matrix([[127, 84, 85, 89],
[218, 139, 142, 173],
[226, 157, 136, 103],
[352, 197, 214, 393]])
but this operations fails if these two NumPy matrices are converted to arrays:
>>> a1 = NP.array(a1)
>&g...
ADB Shell Input Events
...YCODE_PLUS"
82 --> "KEYCODE_MENU"
83 --> "KEYCODE_NOTIFICATION"
84 --> "KEYCODE_SEARCH"
85 --> "TAG_LAST_KEYCODE"
The sendevent utility sends touch or keyboard events, as well as other events for simulating the hardware events. Refer to this article for details: Android, low le...
Difference between matches() and find() in Java Regex
...hen you have a code like
1:Pattern.compile("[a-z]");
2:Pattern.matcher("0a1b1c3d4");
3:int count = 0;
4:while(matcher.find()){
5:count++: }
At 4: The regex engine using the pattern structure will read through the whole of your code (index to index as specified by the regex[single character] ...
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