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Restore a postgres backup file using the command line?
...ostgres -d old_db -v
"/usr/local/backup/10.70.0.61.backup"
important to set -h localhost - option
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Convert character to ASCII code in JavaScript
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edited Feb 6 '17 at 12:11
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Iterate over the lines of a string
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Combining Multiple Commits Into One Prior To Push
...e the feature branch into the master branch.
git merge feature_branch
Reset the master branch to origin's state.
git reset origin/master
Git now considers all changes as unstaged changes.
We can add these changes as one commit.
Adding . will also add untracked files.
git add --all
git commit...
Fetch frame count with ffmpeg
...ry for nb_frames or nb_read_frames.
-of default=nokey=1:noprint_wrappers=1 Set output format (aka the "writer") to default, do not print the key of each field (nokey=1), and do not print the section header and footer (noprint_wrappers=1). There are shorter alternatives such as -of csv=p=0.
Also se...
What characters are allowed in an email address?
...o more 256 in total).
The local-part and domain-part could have different set of permitted characters, but that's not all, as there are more rules to it.
In general, the local part can have these ASCII characters:
lowercase Latin letters: abcdefghijklmnopqrstuvwxyz,
uppercase Latin letters: ABCD...
parseInt(null, 24) === 23… wait, what?
...ntire string can be decoded. At 37 on there is no longer any valid numeral set that can be generated and NaN is returned.
js> parseInt(null, 36)
1112745
>>> reduce(lambda x, y: x * 36 + y, [(string.digits + string.lowercase).index(x) for x in 'null'])
1112745
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Double vs. BigDecimal?
I have to calculate some floating point variables and my colleague suggest me to use BigDecimal instead of double since it will be more precise. But I want to know what it is and how to make most out of BigDecimal ?
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Split output of command by columns using Bash?
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Using array variables
set $(ps | egrep "^11383 "); echo $4
or
A=( $(ps | egrep "^11383 ") ) ; echo ${A[3]}
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Matplotlib tight_layout() doesn't take into account figure suptitle
..._list = [fig.add_subplot(ss) for ss in gs1]
ax_list[0].plot(f)
ax_list[0].set_title('Very Long Title 1', fontsize=20)
ax_list[1].plot(g)
ax_list[1].set_title('Very Long Title 2', fontsize=20)
fig.suptitle('Long Suptitle', fontsize=24)
gs1.tight_layout(fig, rect=[0, 0.03, 1, 0.95])
plt.sho...