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Exit codes in Python
...re.
Example:
import sys, os
try:
config()
except:
sys.exit(os.EX_CONFIG)
try:
do_stuff()
except:
sys.exit(os.EX_SOFTWARE)
sys.exit(os.EX_OK) # code 0, all ok
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Adding rounded corner and drop shadow to UICollectionViewCell
... layer.cornerRadius = radius
}
}
You can call it in collectionView(_:cellForItemAt:) of the datasource once you dequeue your cell.
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How to list the tables in a SQLite database file that was opened with ATTACH?
...r" functions don't look into ATTACHed databases: they just query the SQLITE_MASTER table for the "main" database. Consequently, if you used
ATTACH some_file.db AS my_db;
then you need to do
SELECT name FROM my_db.sqlite_master WHERE type='table';
Note that temporary tables don't show up with ....
Change Tomcat Server's timeout in Eclipse
...setting of Tomcat port, however I saw correct place for it on your screen ^_^. Thanks
– Fisk
Dec 26 '16 at 15:08
...
Is it possible to serialize and deserialize a class in C++?
...
@0xDEADBEEF: That probably happend when using a binary_(i|o)archive, which introduces other "problems" like endian-ness. Try text_(i|o)archive, it's more platform agnostic.
– Ela782
Dec 26 '14 at 22:23
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... 23.5GB / 24GB 1333MHz == 6 x 4GB, 12 x empty
Disk-Control: megaraid_sas0: Dell/LSILogic PERC 6/i, Package 6.2.0-0013, FW 1.22.02-0612,
Network: eth0 (bnx2):Broadcom NetXtreme II BCM5709 Gigabit Ethernet,1000Mb/s
OS: RHEL Server 5.4 (Tikanga), Linux 2.6.18-164.el5 x86...
How to search file text for a pattern and replace it with a given value
...opy this code into your programs.
Here's a quick short way to do it.
file_names = ['foo.txt', 'bar.txt']
file_names.each do |file_name|
text = File.read(file_name)
new_contents = text.gsub(/search_regexp/, "replacement string")
# To merely print the contents of the file, use:
puts new_co...
Set initial focus in an Android application
... android:focusableInTouchMode="true"
android:layout_width="0px"
android:layout_height="0px" >
<requestFocus />
</LinearLayout>
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Relative frequencies / proportions with dplyr
...
Try this:
mtcars %>%
group_by(am, gear) %>%
summarise(n = n()) %>%
mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vigne...
What's the maximum value for an int in PHP?
...rt unsigned
integers. Integer size can be
determined using the constant
PHP_INT_SIZE, and maximum value using
the constant PHP_INT_MAX since PHP
4.4.0 and PHP 5.0.5.
64-bit platforms usually have a maximum value of about 9E18, except on Windows prior to PHP 7, where it was always 32 bit.
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